Question:
Can one eat french fries fried in a deep fryer used to fry dairy foods such as Mozzarella Sticks after having eaten meat? Does one have to wait the standard 6 hours or are the french fries permissible to eat immediately?
Answer:
Since the French fries were cooked in the same oil as the cheese, although the two were cooked at separate times, the French fries are still considered a “tavshil” of milk and considered cooked together with it. The halacha is that we wait six hours after eating meat, before eating milk or even a tavshil of milk.
Sources:
Most poskim say to wait six hours after eating a tavshil of meat, i.e. potato from cholent, and that we should not even eat a tavshil of milk, i.e. a potato from a cheesy soup. These include, R’ A. Eiger on Rema Y:D 89-3, Yad Yehuda ( kotzar) 89-27, Chochmas Adam 40-13, Kitzuk Shulchan Aruch 10-10, Kaf Hachayim Y:D 89-57, Igros Moshe Y:D 2-26, M’Bais Levi 9 pg. 23. They would definitely say that after eating meat itself that one should not eat a tavshil of milk. Even the Mechaber that 89-3 a tavshil after a tavshil, only says so when what was eaten is only a tavshil of meat, but not when actual meat was eaten.
