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Shabbat · Orach Chaim 257

Insulating Food (Hatmanah)

14 questions · 61 opinions

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May one insulate (hatmanah) food on Shabbat itself with a substance that does not add heat?

4 opinions across 2 eras

On Shabbat with Non-Heat-Add…

May one insulate food before Shabbat with a substance that adds heat (mosif hevel)?

12 opinions across 2 eras

Before Shabbat with Heat-Add…

If food was insulated in a heat-adding substance and it merely retained its warmth (did not heat up or improve), is it permitted b'dieved?

2 opinions

B'dieved Status of Food That…

May one place items on top of food on Shabbat to protect it from mice or dust, even if those items retain heat?

3 opinions across 2 eras

Covering for Protection vs. …

Which substances are classified as adding heat (mosif hevel) and which do not?

7 opinions across 2 eras

Classification of Insulating…

If hatmanah was done before Shabbat and the pot became uncovered on Shabbat, may one re-cover it or change the insulation?

5 opinions across 2 eras

Re-covering or Replacing Ins…

If food is transferred from its original pot to a different pot on Shabbat, may one insulate it?

4 opinions across 2 eras

Insulating Food Transferred …

May one insulate cold food on Shabbat, and with what types of substances?

3 opinions across 2 eras

Insulating Cold Food on Shab…

Does the prohibition of hatmanah apply even when food is fully cooked and mitzta'mek v'ra lo (shrinks to its detriment)?

6 opinions across 2 eras

Fully Cooked Food / Mitzta'm…

When a pot on a kirah with coals is covered with cloths that touch the pot, is this considered hatmanah even though the cloths themselves do not add heat?

6 opinions across 2 eras

Cloths on Pot Over Fire (Mos…

What constitutes hatmanah (insulation) as opposed to shehiyah (leaving food on a heat source)?

2 opinions across 2 eras

Definition and Distinction f…

Is there a mitzvah to eat hot food on Shabbat?

2 opinions

Mitzvah of Hot Food on Shabbat

May food placed in an oven before Shabbat (Ashkenazi oven practice) include items that cook quickly, like pastries and legumes?

2 opinions across 2 eras

Quick-Cooking Items in Oven …

Does the Rema's b'dieved leniency for accidental hatmanah with a heat-adding substance apply only to fully cooked food?

3 opinions across 2 eras

Scope of B'dieved Leniency f…