The SA in YD Siman 97 Sif 1 (the makor is a braisa in Pesachim Daf 30) says that one should not knead together a dough with milk, lest someone come to eat it together with meat. If one did knead them ...
"Meat and Dairy—A Kosher Consumer's Handbook", by the Star-K, indicates: Uncovered dairy in a clean fleishig [=meat] oven — If one cooks fleishig in an oven and ensures it remains clean (i.e. the ...
It says in SA YD Siman 87 Sif 6 that if one "smokes" together a meat and milk or if they "cook" it in the hot springs of Teveria then they are patur (however this is still ossur to do and of course ...
Metal utensils that will be used to handle food that's to be consumed generally need first to be immersed in a mikvah ("toyveled") (if owned by a Jew). If the food or utensil is hot, the utensil must ...