Yosef Karo, Shulchan Aruch — Yoreh Deah 113 Laws of foods cooked by gentiles
“ A non-Jew that cooks for someone who is sick on the sabbath, it is permitted after the sabbath, even for those who are healthy, and there is no concern here of the prohibition of non-Jewish cooking, because in any case, it is recognizable what this is. ”
Yosef Karo, Shulchan Aruch — Yoreh Deah 113 Laws of foods cooked by gentiles
“ And there are those that disagree and believe that lighting a fire or stoking the coals in any way with regards to cooking, as with bread, is sufficient, and that is our custom. And even stoking the fire without any particular intentions works. And there are those that say that even if the Jew did not stoke the fire, and did not throw in any wood chips, only that the non-Jew lit the oven from a fire that was lit by a Jew, that is permitted. 8 If a Jew puts the dish on the fire, and takes it off, and a non-Jew comes and puts the dish back on, this is forbidden. ”
Yosef Karo, Shulchan Aruch — Yoreh Deah 113 Laws of foods cooked by gentiles
“ Only hanachah (actual placing the food in the oven) counts. Therefore, if one wants to cook in a pan in an oven of non-Jews, the Jew must place the pan in the gentile's oven, in a place where it is able to cook. ”
