Chullin 113

Sugya Map

The sugya of Chullin 113a to Chullin 113b serves as a foundational locus for the mechanics of halakhic heat transfer via salting (maliach k'rotheach) and marinating (kavush k'mevushal), as well as the scriptural architecture of the prohibition of meat and milk (basar b'chalav).

                      [Chullin 113a-b]
                             │
            ┌────────────────┴────────────────┐
            ▼                                 ▼
   [Mechanics of Salting]           [Basar B’chalav Derivations]
   (Maliach K'rotheach)             (The Triple "G'di" Exclusions)
            │                                 │
   ┌────────┴────────┐               ┌────────┴────────┐
   ▼                 ▼               ▼                 ▼
[Liquid Transfer] [Salt Textures] [Issur Chal   [Scope of Issur]
(Tsir vs. Dam)   (Coarse vs. Fine) Al Issur]    (Fowl, Chelev, etc.)

The Issues

• The Thermodynamic Status of Salt: Does salting (meliachah) operate exactly like cooking (bishul), and does it facilitate a bidirectional or unidirectional transfer of flavor (b'li'ah and peletah)?
• The Fluid Dynamics of Halakhic Contamination: Does the juice/gravy of meat (tsir) carry the same status as blood (dam), and do we apply the principles of "it slides off" (mishrak sharik) or "as it absorbs, so it expels" (k'bole'o kach polto) to salted heterogeneous mixtures?
• The Anatomy of Meliachah: The physical requirements of the salting process—specifically, the necessity of pre-rinsing (hadacha rishona), the texture of the salt (miliach g'lalnita), and the requirement of a perforated vessel (kli menukav).
• The Metaphysics of Multiple Prohibitions: How does the Torah's three-fold repetition of the prohibition "Do not cook a kid in its mother's milk" navigate the conceptual barrier of ein issur chal al issur (a prohibition cannot take effect upon an existing prohibition)?

Nafka Mina (Halakhic Ramifications)

• Heterogeneous Salting: If kosher and non-kosher items (such as fish or meat) are salted together, does the kosher item become prohibited post facto (b'di'avad)?
• The Fine Salt Crisis: If a kitchen uses finely ground table salt instead of coarse rock salt for koshering meat, is the meat rendered non-kosher due to premature absorption of blood?
• Unperforated Salting: If meat is salted on a flat surface without drainage, does the reabsorbed blood render the meat permanently forbidden, or can it be salvaged via broiling (tzli)?
• Fowl and Milk: Is the prohibition of eating chicken with dairy a biblical (d'oraita) or rabbinic (d'rabanan) decree?

Primary Sources

• Talmudic Locus: Chullin 113a–113b.
• Tannaitic Parallels: Exodus 23:19, Exodus 34:26, Deuteronomy 14:21.
• Codifications: Maimonides, Mishneh Torah, Hilkhot Ma'akhalot Assurot 9:1–3; Shulchan Aruch, Yoreh Deah 69 (Laws of Salting) and Yoreh Deah 105 (Laws of Maliach).

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Text Snapshot

The following key passages from the sugya establish the operational definitions of maliach and the biblical derivation of basar b'chalav exclusions:

ולימא ליה מדשמואל, דאמר שמואל: מליח הרי הוא כרותח, וכבוש הרי הוא כמבושל!

"But let him say to him from the statement of Shmuel, for Shmuel said: A salted food is like a boiling food, and a marinated food is like a cooked food!" Chullin 113a

שמואל אמר: אין הבשר יוצא מידי דמו אלא אם כן מולחו יפה יפה ומדיחו יפה יפה.

"Shmuel said: Meat cannot be rid of its blood unless one salts it thoroughly and rinses it thoroughly." Chullin 113a

אמר קרא: "ויהודה שלח את גדי העזים" - גדי העזים הוא דאיקרי גדי, אבל כל גדי דעלמא אפילו פרה ורחל במשמע.

"The verse states: 'And Judah sent the kid of the goats'—it is here that it is called 'a kid of the goats,' implying that any unspecified 'kid' (g'di) in the rest of the Torah includes even a calf or a lamb." Chullin 113b

Lexical Nuances

• מליח הרי הוא כרותח (Maliach ha-rei hu k'rotheach): The Gemara equates salting to thermal heat. Crucially, the term maliach here does not mean merely salted, but refers to a state of shinoi (transformation) where the salt is potent enough to render the food inedible without washing—defined elsewhere as maliach she-eino ne'ekhal machmat melacho (salted to the point of being inedible due to the salt).
• משרק שריק (Mishrak sharik): Literally "it slides off." This refers to the low viscosity of certain liquids (like wine, water, or thin juices) that prevents them from being absorbed by a surface because they slide off before penetration can occur.
• מלחא גללניתא (Miliach g'lalnita): Coarse, crystalized rock salt. Rashi notes this is mela gassa (coarse salt). The etymology traces to galal (pebbles/stones), indicating its thick, crystalline structure which differs fundamentally in its chemical and physical interaction with blood compared to fine salt (mela daka).
• חילול (Chilul): Rashi Chullin 113a s.v. Rav Huna notes that all washing of meat is translated in Aramaic as chilul (from the root meaning to hollow out or wash thoroughly), which is critical for identifying the pre-salting wash (hadacha rishona).

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Readings

The Rishonim and Acharonim dissecting Chullin 113 split into two conceptual camps: those who view meliachah as a physical facsimile of thermal cooking, and those who view it as a unique halakhic category governed by the dynamics of chemical extraction.

                      [Meliachah Models]
                              │
            ┌─────────────────┴─────────────────┐
            ▼                                   ▼
   [Thermal Equivalence]               [Extraction Dynamics]
   (Maliach K'rotheach)                (Koach Ha-Peletah)
   - Tosafot: Bidirectional            - Rashba: Exudation blocks
   - Maharam Schiff: ChaNaN            - Haggahot Ya'avetz: Viscosity

Tosafot: The Limits of Transfusion (Mishrak Sharik and K'bole'o)

Tosafot address why the Gemara could not simply apply Shmuel’s dictum of maliach k'rotheach to resolve Rava's query:

ולימא ליה מדשמואל - אע"ג דברייתא עדיפא בברייתא לחוד לא סגי אלא מכח מילתיה דשמואל דמייתי בהדה אבל בדשמואל לחוד סגי ומשני הוה אמינא הני מילי דם וכאן אין שייך לאסור משום דמשרק שריק או כבולעו כך פולטו

"And let him say to him from Shmuel... Even though a Baraita is superior, the Baraita alone is not sufficient except through the power of Shmuel's statement which is brought with it, but Shmuel's statement alone would have sufficed. And the Gemara answers: I would have said these words apply only to blood, and here it is not relevant to forbid because of 'it slides off' (mishrak sharik) or 'as it absorbs, so it expels' (k'bole'o kach polto)." — Tosafot, Chullin 113a s.v. V'lima lei Tosafot on Chullin 113a:1:1

Analysis of Tosafot

Tosafot introduce a critical conceptual paradigm. Why would we think that salted tereifa meat does not forbid adjacent kosher meat? Because of two competing mechanical properties:

1. משרק שריק (Mishrak sharik): The juices (tsir) of the meat are thin and slide off the surface of the adjacent meat without being absorbed.
2. כבולעו כך פולטו (K'bole'o kach polto): As the kosher meat is busy expelling its own juices due to the salt, it cannot simultaneously absorb foreign juices. The outward pressure of exudation (peletah) blocks the inward path of absorption (b'li'ah).

Tosafot’s chiddush is that maliach k'rotheach is not a perfect mirror of thermal cooking. In physical cooking (bishul), the heat of the pot forces a bidirectional, simultaneous exchange of flavors. In salting (meliachah), however, the salt acts as an extraction agent. Because its primary mechanism is peletah (extraction), we might have assumed that as long as a piece is actively expelling, it is immune to absorption. Rava’s derivation from the Torah is necessary to teach us that tsir (juice) bypasses this immunity and can indeed penetrate, rendering the adjacent piece forbidden.

Rashba: The Granularity of Salt and the Chemistry of Exudation

The Rashba tackles the statement of Rav Dimi of Neharde’a, who would salt meat with coarse salt (miliach g'lalnita) and then shake it off:

רב דימי מנהרדעא מלח במילחא גללניתא ומנפיץ לה. איכא מן דמפרשי דדוקא במלחא גללניתא, אבל בדקה טפי לא, משום שהיא נתכת ונבלעת בתוך הבשר ואינה מפלטת את הדם...

"Rav Dimi of Neharde'a would salt with coarse salt and shake it off. There are those who explain that this is specifically with coarse salt, but with fine salt not, because it melts and is absorbed into the meat and does not extract the blood..." — Rashba, Chullin 113a s.v. Rav Dimi Rashba on Chullin 113a:2

Analysis of Rashba

The Rashba presents a dispute between the Ra'avad and other commentators regarding the physical mechanics of salting:

• The "Fine Salt" Danger School: Fine salt melts instantly upon contact with the moisture of the meat. Instead of drawing the blood outward (koach ha-peletah), the liquefied salt is absorbed into the fibers of the meat, carrying the surface blood back inside with it. Thus, fine salt acts as a vehicle for absorption rather than extraction.
• The Ra'avad/Rashba Lenient School: Any salt can extract blood. However, fine salt requires aggressive washing (mrika u-shchifa) because it clings to the meat's crevices. Coarse salt (g'lalnita), by contrast, does its job and can simply be shaken off (menafets lah) because its large surface area prevents it from dissolving completely into the meat.

The lomdisch division here is profound: Is the disqualification of fine salt based on a chemical failure (it fails to trigger the osmotic pressure necessary to extract blood and instead drives it inward) or a mechanical cleaning failure (it extracts the blood but remains stuck to the meat, requiring extra washing to remove the bloody residue)? The Rashba rules that b'di'avad, fine salt works, but l'khatchila, coarse salt is required to avoid the mechanical complication of residual blood-soaked salt clinging to the meat.

Maharam Schiff: Unsalted Meat and the Metaphysics of ChaNaN

The Maharam Schiff addresses the status of unsalted meat cooked without salting (basar she-lo nimlach), analyzing the Rosh's view on the volume of nullification required:

באשר"י ובשר שנתבשל בלא מליחה צריך ס' לבטל כל החתיכה דלא ידעינן כמה דמא נפיק מיניה... ואף דלדעת י"א דחתיכה עצמה נעשה נבילה בזה... שהרי לא נעשה נבילה מעולם דכ"ז שלא פירש הדם חוץ לחתיכה הוי דם אברים שלא פירש...

"In the Asheri: Meat that was cooked without salting requires sixty times [the volume of] the entire piece, because we do not know how much blood emerged from it... And even though according to some, the piece itself becomes neveilah (ChaNaN) in this case... it was never actually made neveilah, for as long as the blood has not departed from the piece, it is considered blood of the limbs that has not departed..." — Maharam Schiff, Chullin 113a s.v. Shmuel Maharam Schiff on Chullin 113a:2

Analysis of Maharam Schiff

The Maharam Schiff navigates a complex conceptual web regarding Chatika Na'aseit Neveilah (ChaNaN—the principle that a permitted piece of food that absorbs a prohibition itself becomes a prohibited entity, requiring sixty times its own volume to nullify, rather than just sixty times the volume of the absorbed prohibition):

1. The Epistemic Problem: Why do we require sixty times the volume of the entire unsalted piece of meat when it is cooked in a pot? Because we cannot quantify the exact volume of blood that was expressed.
2. The Metaphysical Status of Blood: Blood inside meat is only biblically forbidden once it "departs" (dam she-parash). While inside the meat, it is defined as dam evarim (blood of the limbs), which is permitted to be eaten if the meat is not cooked (e.g., if eaten raw, provided the surface blood is washed).
3. The Paradox of ChaNaN in Unsalted Meat: If the blood only becomes forbidden as it leaves the meat, can we say the meat itself became a "carcass" (neveilah)? How can the vessel of the prohibition (the meat) become prohibited by its own internal juices if those juices only acquire their prohibited status after they leave the vessel?

The Maharam Schiff clarifies that even if we do not hold of ChaNaN for dry, permitted items, we still require sixty times the entire piece here due to our quantitative ignorance (lo yade'inan). The meat itself does not metaphysically transform into neveilah because the blood was never an external agent of contamination; rather, it is a failure of extraction.

Haggahot Ya'avetz: The Viscosity of Tsir vs. Fat

The Ya'avetz connects the mechanics of mishrak sharik to the physical properties of different animal exudates:

תוס' ד"ה ולימא ליה וכו׳ משום דמשריק שריק וכו'. נ"ב אזדו לטעמייהו דלעיל דגבי שמנינית וציר לא אמרי׳ בי׳ משרק שריק ולא כבכ"פ כמו שכתבו גבי כחל

"Tosafot s.v. V'lima lei... 'because it slides off' (mishrak sharik) etc. My note: They follow their reasoning from above, that regarding fat (shmaninit) and juice (tsir), we do not say 'it slides off' nor do we say 'as it absorbs, so it expels' (k'bole'o kach polto) as they wrote regarding the udder (kachal)." — Haggahot Ya'avetz, Chullin 113a s.v. Tosafot Haggahot Ya'avetz on Chullin 113a:4

Analysis of Haggahot Ya'avetz

The Ya'avetz highlights a physical distinction in halakhic fluid dynamics:

• Watery Blood/Juice vs. Viscous Fat: Blood is thin and low-viscosity; it slides off (mishrak sharik) and is easily expelled. Fat (shmaninit) and rich meat juices (tsir), however, are thick and adhesive.
• The Udder (Kachal) Paradigm: The udder contains milk, which is highly viscous. Thus, we do not apply the lenient rule of k'bole'o kach polto or mishrak sharik to an udder. The fat and milk cling to the meat, forcing their way into the pores even while the meat is expelling its own juices.

This distinction is crucial for the physics of meliachah: Salting does not create a uniform barrier against all foreign substances. It creates an outward pressure that can ward off thin fluids like blood, but it cannot resist the sticky, penetrating power of fat (shmaninit) or concentrated gravy (tsir).

Rashi: The Etymology of Washing and Shaking

Rashi provides the physical definitions that govern the practical execution of the salting process:

רב הונא דלא בעי הדחה ברישא בדחלליה בי טבחא. כל רחיצת הבשר מתרגמינן חילול

"Rav Huna who did not require rinsing first [did so] in a case where they washed it in the slaughterhouse. All washing of meat is translated as 'chilul'." — Rashi, Chullin 113a s.v. Rav Huna Rashi on Chullin 113a:10:1

מילחא גללניתא - מלח גסה שלמי"א

"Coarse salt—large rock salt." — Rashi, Chullin 113a s.v. Miliach g'lalnita Rashi on Chullin 113a:10:2

ומנפיץ ליה - למילחא לאחר זמן מפני שהדם נבלע בה אבל מלח דקה אין צריך לנפץ שהיא נתכת מעצמה

"And shake it—the salt, after some time, because the blood is absorbed in it. But fine salt does not need to be shaken off because it melts on its own." — Rashi, Chullin 113a s.v. U-menafets lah Rashi on Chullin 113a:10:3

Analysis of Rashi

Rashi defines two mechanical phases of koshering:

1. The Pre-Wash (Hadacha Rishona): The meat must be washed before salting to remove any surface blood. If surface blood remains, the salt will immediately absorb it and drive it back into the meat. Rashi identifies the Aramaic chilul as the semantic equivalent of washing, showing that even if the butcher washed the meat in the slaughterhouse, it satisfies this requirement.
2. The Post-Salting Shake (Nifutz): The coarse salt must be shaken off because it acts as a sponge, holding the extracted blood on the surface of the meat. If left there, the meat will reabsorb the blood. Fine salt, because it dissolves, runs off the meat on its own (provided the vessel is perforated), which is why it does not require physical shaking, though it still requires post-rinsing (hadacha acharona).

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Friction

The intellectual energy of this sugya is concentrated in two major conceptual clashes: the metaphysical mechanics of issur chal al issur and the fluid dynamics of the fish baraita.

                     [Conceptual Friction]
                               │
            ┌──────────────────┴──────────────────┐
            ▼                                     ▼
   [Conflict A: Issur Chal]               [Conflict B: Fish Baraita]
   How can a second prohibition           How does "maliach k'rotheach"
   take effect on forbidden fat?          permit salted fish mixtures?
            │                                     │
   ┌────────┴────────┐                   ┌────────┴────────┐
   ▼                 ▼                   ▼                 ▼
[Gali Rachmana]   [Differentiation of]   [Viscosity]       [One-way extraction]
Torah decree      Eating vs. Cooking     Fish juice        Salted piece expels,
via "g'di"        prohibitions           is thin           unsalted piece absorbs

Conflict A: The Metaphysical Clash of Overlapping Prohibitions

The Gemara notes that Shmuel derives the inclusion of forbidden fat (chelev) and carcasses (neveilah) in the prohibition of basar b'chalav from the repetition of the word g'di (kid).

The Kushya

How can Shmuel maintain that the prohibition of basar b'chalav takes effect upon chelev or neveilah? There is a fundamental, universally accepted meta-halakhic principle: אין איסור חל על איסור (Ein issur chal al issur)—a prohibition cannot take effect upon an existing prohibition!

If the fat is already biblically forbidden to be eaten under the penalty of karet (spiritual excision), how can the additional prohibition of cooking and eating it with milk take effect?

Furthermore, the Gemara raises a direct contradiction in Shmuel’s own rulings: Shmuel states in the name of Rabbi Elazar that an impure priest who eats impure terumah is not liable for death by the hand of Heaven. Why? Because the terumah was already "desecrated" (mechalal) before he ate it. The second prohibition of impurity cannot take effect upon the existing prohibition of desecrated terumah.

If Shmuel holds ein issur chal al issur in the case of terumah, how can he hold that basar b'chalav takes effect upon chelev and neveilah?

The Terutzim

The Gemara offers three distinct resolutions, each presenting a different approach to the metaphysics of issurim:

Terutz 1: The Sovereign Exception (Gali Rachmana)

בכלל שמעתיה דשמואל דאמר איסור חל על איסור, ושאני התם דאמר קרא "ומתו בו כי יחללהו" - פרט לזו שחלולה ועומדת.

"In general, Shmuel maintains that a prohibition does take effect upon an existing prohibition, and it is different there [in terumah] because the verse states: 'And die therein if they desecrate it'—excluding this case which is already desecrated."

Under this reading, Shmuel holds that issur chal al issur is physically and metaphysically possible. Prohibitions are not physical blocks; they are legal statuses. A single object can easily bear multiple legal statuses.

The case of impure terumah is merely a local scriptural exclusion (gzeirat ha-katuv). The Torah specifically wrote "if they desecrate it" to teach that the death penalty only applies when a priest desecrates a pure item, not when he interacts with an already degraded one.

Terutz 2: The Explicit Scriptural Inclusion (Gali Rachmana in Reverse)

בכלל שמעתיה דשמואל דאין איסור חל על איסור, ושאני הכא דריבי רחמנא "גדי", "גדי", "גדי".

"In general, Shmuel maintains that a prohibition does not take effect upon an existing prohibition, and here [in meat and milk] it is different because the Merciful One explicitly included them via the repetition of 'kid', 'kid', 'kid'."

This terutz reverses the metaphysical default. Shmuel holds that ein issur chal al issur is a hard ontological rule. A prohibited object is "saturated" and cannot receive further prohibitions.

However, the Torah has the power to override this ontological rule. By repeating the word g'di three times, the Torah issued a decree that in the case of basar b'chalav, the new prohibition of meat and milk must take effect despite the existing status of chelev or neveilah.

Terutz 3: Authorial Attribution (Tartei D'sitri)

הא דידיה, הא דרביה.

"This [meat and milk] is his own opinion, and that [terumah] is his teacher’s [Rabbi Elazar's] opinion."

This resolution sidesteps the systemic contradiction by attributing the two rulings to different scholars. Shmuel himself holds issur chal al issur (prohibitions can stack), whereas his teacher, Rabbi Elazar, holds ein issur chal al issur (prohibitions cannot stack).

Deep Lomdus: Eating vs. Cooking

The Acharonim (notably the Ryech and the Kovetz Shiurim) ask: Why do we even need a scriptural inclusion for cooking forbidden fat in milk? Even if ein issur chal al issur prevents the prohibition of eating meat and milk from taking effect on chelev, there is no existing prohibition against cooking forbidden fat!

Since the act of cooking chelev is permitted on its own, the prohibition of cooking meat and milk should take effect immediately, as it does not conflict with any prior cooking prohibition.

The answer lies in the conceptual unity of basar b'chalav. The Torah did not create two separate, independent prohibitions of "cooking" and "eating." Rather, the prohibition of cooking is a preparatory stage of the eating prohibition.

If the eating prohibition cannot take effect (due to ein issur chal al issur), the cooking prohibition is likewise paralyzed. Therefore, the scriptural inclusion of g'di is required to allow the entire complex of the basar b'chalav prohibition to descend upon the chelev.

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Conflict B: The Paradox of the Salted Fish Baraita

The Gemara raises an objection to Rava's assertion that the juices of tereifa meat prohibit adjacent kosher meat from a Baraita regarding fish:

דג טהור שמלחו עם דג טמא - מותר.

"A kosher fish that was salted with a non-kosher fish is permitted." Chullin 113a

The Kushya

If maliach k'rotheach (salting is like boiling), and the non-kosher fish is salted, why does its extracted juice (tsir) not forbid the kosher fish? If they are salted together, they should absorb from one another and render the kosher fish forbidden!

The Gemara attempts to resolve this by limiting the Baraita to a case where the kosher fish was salted but the non-kosher fish was unsalted (tafel). But the Gemara immediately challenges this: If the non-kosher fish is unsalted, it does not expel juice, so of course it is permitted!

Furthermore, the end of the Baraita states: "If the non-kosher was salted and the kosher was unsalted, it is prohibited." This implies that if both are salted, it is permitted! Why?

The Terutz

The Gemara resolves this by explaining that fish juice (tsir) has a unique physical behavior, and by clarifying the mechanics of peletah (extraction):

מידי דהוה אכחל... כחל מאי טעמא? דמשרק שריק, הני מילי דם וציר דמשרק שריק, אבל שומן מפעפע...

The underlying physical and halakhic resolutions are:

1. The Unidirectional Flow of Extraction: When both fish are salted, each is actively expelling its own juices. The intense outward pressure of the kosher fish’s exudation (koach ha-peletah) prevents the incoming juices of the non-kosher fish from penetrating.
2. The Low Viscosity of Fish Juice: Fish juice (tsir) is extremely thin and watery. Unlike animal fat, which is viscous and penetrates under any conditions (mpefe'a), fish juice slides off (mishrak sharik) the surface of the kosher fish and is washed away before it can be absorbed.
3. The "Unsalted Kosher" Danger: If the non-kosher fish is salted and the kosher fish is unsalted, the kosher fish is not expelling anything. It sits passively, allowing the salt on the non-kosher fish to draw out the non-kosher juices and drive them directly into the defenseless, unsalted kosher fish.

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Intertext

To understand how the principles of Chullin 113 operate across the broader halakhic landscape, we must trace them to parallel sugyot in the Talmud and their ultimate codification in the Shulchan Aruch.

                  [Chullin 113]
                        │
       ┌────────────────┴────────────────┐
       ▼                                 ▼
 [Pesachim 76a]                  [Yoreh Deah 69 / 105]
 (Tata'ah Gavar)                 (Practical Code)
 - Heat vs. Salt                 - Coarse Salt Only
 - Bidirectional Transfer        - Perforated Vessels

Talmudic Parallel: Pesachim 76a (The Physics of Heat Transfer)

In Pesachim 76a, the Gemara records a fundamental dispute between Rav and Shmuel regarding thermal heat transfer:

איתמר: חם לתוך חם - דברי הכל אסור. צונן לתוך צונן - דברי הכל מותר. חם לתוך צונן, צונן לתוך חם - רב אמר: עילאה גבר, ושמואל אמר: תתאה גבר.

"It was stated: Hot into hot—all agree it is prohibited. Cold into cold—all agree it is permitted. Hot into cold, or cold into hot—Rav says: The upper prevails (ila'ah gavar). Shmuel says: The lower prevails (tata'ah gavar)."

Comparison with Chullin 113

How does the rule of tata'ah gavar (the bottom element dominates the temperature and thermodynamic interaction) interface with maliach k'rotheach?

In salting, we do not calculate "upper" versus "lower" in terms of physical position. Instead, the salt itself acts as the heat source.

Wherever salt is present, it creates a localized zone of "boiling" (rotheach). Thus, if a cold, unsalted kosher piece of meat is placed on top of a cold, salted non-kosher piece, the bottom piece is considered "hot" due to its salt. Because tata'ah gavar, the bottom salted piece heats the top unsalted piece, causing it to absorb the non-kosher flavor.

Halakhic Codification: Shulchan Aruch

1. The Requirement of Coarse Salt (Yoreh Deah 69:3)

The Shulchan Aruch codifies the dispute between the Rashba and the Ra'avad regarding the texture of the salt:

אין מולחין אלא במלח גסה כחול חול... ואם מלח במלח דקה כקמח... בדיעבד מותר.

"One should only salt meat with coarse salt that is like sand... and if one salted with fine salt that is like flour... post facto (b'di'avad) it is permitted." — Shulchan Aruch, Yoreh Deah 69:3

This follows the Rashba's ruling: l'khatchila, we require coarse salt (miliach g'lalnita) because fine salt melts too quickly and can be reabsorbed. However, b'di'avad, because any salt triggers some extraction, the meat is permitted if it was thoroughly washed after salting.

2. The Perforated Vessel (Yoreh Deah 69:16)

Shmuel’s ruling that meat may only be salted on a perforated vessel is codified as an absolute requirement:

אין מולחין אלא בכלי מנוקב, כדי שיזוב הדם; ואם מלח בכלי שאינו מנוקב... אסור.

"One should only salt meat on a perforated vessel so that the blood can flow out; and if one salted in a vessel that is not perforated... the meat is prohibited." — Shulchan Aruch, Yoreh Deah 69:16

If the vessel lacks holes, the blood pools at the bottom. Even though the meat is actively expelling blood, once the pool of blood forms, the meat's outward pressure is overcome, and it reabsorbs the pooled blood. The Rama notes that if this occurs, the meat can only be salvaged by broiling it over an open flame (tzli), which draws out the reabsorbed blood.

3. Salting Kosher with Non-Kosher (Yoreh Deah 105:11)

The Shulchan Aruch codifies the fish baraita's principles for all salted mixtures:

דבר טהור שמלחו עם דבר טמא... אם שניהם מלוחים... או שהטמא מלוח והטהור תפל - הטהור אסור. ואם הטהור מלוח והטמא תפל - הטהור מותר.

"A kosher item that was salted with a non-kosher item... if both are salted... or if the non-kosher is salted and the kosher is unsalted—the kosher is prohibited. But if the kosher is salted and the non-kosher is unsalted—the kosher is permitted." — Shulchan Aruch, Yoreh Deah 105:11

Note a critical development: While the Gemara suggested that if both are salted it might be permitted due to k'bole'o kach polto and mishrak sharik, the Shulchan Aruch rules stringently.

Because we are dealing with meat (which contains fat) and not just fish, we assume that fat does not slide off (mishrak sharik). Therefore, if both are salted, they prohibit one another.

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Psak/Practice

The abstract physics of Chullin 113 manifest daily in the contemporary kosher kitchen, governing everything from commercial meat processing to accidental dairy-meat contact.

                      [Modern Kitchen Psak]
                                │
            ┌───────────────────┴───────────────────┐
            ▼                                       ▼
   [Commercial Koshering]                  [Accidental Contact]
   - Three-stage washing                   - Cold dairy on cold meat:
   - Coarse rock salt                      - If dry: Wash off
   - Angled, draining tables               - If salted: Maliach k'rotheach

Case Study: The Koshering Process

In modern kosher slaughterhouses, the transition from carcass to edible meat is a direct application of Shmuel and Rav Huna's rulings on Chullin 113a:

[Slaughterhouse Wash] ──► [Pre-Rinse (Hadacha)] ──► [Salting (Meliachah)] ──► [Post-Rinse (Hadacha)]
(Removes surface blood)   (Softens meat fibers)     (Coarse salt on rack)     (Removes bloody salt)

1. The Pre-Wash (Hadacha Rishona): The meat is soaked in cold water for 30 minutes. This softens the meat, opening its pores to allow the salt to extract the blood, and washes away surface blood so the salt does not drive it back inward.
2. The Salting (Meliachah): The meat is covered in coarse rock salt (miliach g'lalnita). It is placed on an angled board or wire rack (the modern equivalent of Shmuel's kli menukav) to ensure that the extracted blood drains away immediately and cannot pool. The meat must remain in this state for at least one hour.
3. The Post-Wash (Hadacha Acharona): The salt is shaken off (nifutz), and the meat is washed thoroughly three times under running water to ensure that no blood-soaked salt remains on the surface.

Case Study: Accidental Salting of Dairy and Meat

Suppose a block of salted cheddar cheese is left in a container touching a piece of raw, unsalted beef in a refrigerator.

• The Legal Status: Salted cheese is considered "hot" (maliach k'rotheach). The beef is unsalted (tafel).
• The Physics of Transfer: Because the cheese is salted and the beef is unsalted, the cheese acts as the active thermal agent. The beef sits passively and cannot resist the dairy flavor.
• The Halakhic Verdict: The beef absorbs the dairy flavor through the contact point. Because this occurs without physical cooking, the beef must be peeled (klipa) at the point of contact to a depth of one fingerbreadth, rather than requiring the entire piece to be discarded, provided there was no liquid pooling.

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Takeaway

Halakhic salting (meliachah) is not merely a dry, symbolic ritual. It is a dynamic process of extraction and absorption governed by the laws of osmotic pressure and fluid viscosity. In the halakhic universe, salt acts as heat, and fluid dynamics determine the boundaries of kosher food.