May one insulate cold food on Shabbat, and with what types of substances?
Synopsis
Cold food may be insulated on Shabbat with a non-heat-adding substance (to prevent further cooling or remove its chill). However, insulating cold food with a heat-adding substance is forbidden even before Shabbat.
More in Insulating Food (Hatmanah)
May one insulate (hatmanah) food on Shabbat itself with a substance that does not add heat?
4 opinions
May one insulate food before Shabbat with a substance that adds heat (mosif hevel)?
12 opinions
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
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
Which substances are classified as adding heat (mosif hevel) and which do not?
7 opinions
If hatmanah was done before Shabbat and the pot became uncovered on Shabbat, may one re-cover it or change the insulation?
5 opinions
If food is transferred from its original pot to a different pot on Shabbat, may one insulate it?
4 opinions
Does the prohibition of hatmanah apply even when food is fully cooked and mitzta'mek v'ra lo (shrinks to its detriment)?
6 opinions
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