May one pour pre-insulated hot water into a pot of drying food on Shabbat?

ShabbatCooking

Synopsis

The Mechaber says one should protest against those who insulate hot water before Shabbat and pour it into food on Shabbat when the food dries out, because this may constitute cooking.

Early Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

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