Stirring the pot, Part II

Hi,

We have said that one may not stir a pot of fully cooked food which is atop a heating element on Shabbat, lest one think the food is cooked when it is not.

If the pot of fully cooked food is atop a blech [a layer of material covering a heating element], in a spot which is not over the heating element but only adjacent to it, then one may stir the pot.

(Rav Moshe Feinstein, Igrot Moshe Orach Chaim 4:74:Bishul 11)

Have a great day,
Mordechai