Arukh HaShulchan, Orach Chaim 318:19-25

Sugya Map

• Issue: Defining Tochen (Grinding) regarding soft substances versus dry, hard foodstuffs.
• Nafka Mina: Whether crushing cooked vegetables or soft fruits constitutes a toledah of Tochen.
• Primary Sources: Shabbat 74a, Shulchan Aruch, Orach Chaim 321:10, Arukh HaShulchan, Orach Chaim 318:19-25.

Text Snapshot

• Arukh HaShulchan 318:23: "אבל דבר שאינו גדל מן הארץ... אין בו משום טוחן" (But something that does not grow from the earth... is not subject to the prohibition of Tochen).
• Nuance: R' Yechiel Michel Epstein distinguishes between the ma'aseh (act of grinding) and the me'utza (the essence of the food). Note the shift from the Rambam's focus on the tool to the AHS's focus on the botanical nature of the item.

Readings

• Rambam (Hilkhot Shabbat 8:15): The chiddush is that Tochen requires a keli (tool). If done by hand, it is patur.
• Arukh HaShulchan (loc. cit.): Argues that the gezeirah of Tochen was specifically regarding geidei karka (produce). His chiddush is extending the exemption to anything non-botanical, even if reduced to fine particles.

Friction

• Kushya: If the issur is based on the melacha of Tochen (reconstructing the structure of the grain), why should the origin (plant vs. animal) matter?
• Terutz: The AHS posits that Tochen is a melacha connected to the sidur d'pat (bread-making process). Thus, Tochen is only applicable where one mimics the milling process of grain.

Intertext

• Shulchan Aruch, Orach Chaim 321:10: Codifies the restriction on grinding spices.
• Mishnah Berurah 321:35: Debates whether eggs are subject to Tochen; the AHS's logic provides the backbone for the leniency regarding non-vegetative foods.

Psak/Practice

The AHS heuristic is clear: Tochen does not apply to meat, fish, or eggs, as they are not gedulei karka. In a modern kitchen, this permits the mashing of hard-boiled eggs or cooked fish for salads, provided it is done for immediate consumption (le'alter).

Takeaway

Tochen is not a universal prohibition against "making things smaller," but a specific regulation of the grain-to-bread continuum. If it didn't grow in a field, the melacha loses its structural tether.