If I cooked a parev soup in a parev saucepan but liquidised it while it was still hot with a meaty liquidiser with a metal blade can I eat the soup with cheese?
Answer:
If the liquidiser was clean from remnants, and not used in 24 hours for meat, the soup may be eaten with cheese.
Sources:
Shulchan Aruch Y:D 95:1,2 and commentaries there.