Seif 2: In what situations were these things (the laws of the previous se’if) said? In a case of roasting. But one came to boil them in pots, the Kosher meat by itself and the non-Kosher meat by itself, even in a small oven with a closed opening, then the meat is allowed, even if the pots are uncovered. Hagah – This is specifically about an oven that is open partially. But if it was closed on all sides, like the way that we bury hot food for Shabbat purposes, it is forbidden. And even post facto, some are strict and forbid it if the permitted food and the forbidden food are uncovered. But in a situation where there would be great loss, we can be lenient.