Answer:
I once was house-sitting for a Jewish family who had a huge kitchen they divided in two. One kitchen was for meats and the other was for vegetables. This shocked me and made an easy job difficult since I had to take care not to mix utensils or dishes. The vegetables were to remain separate from the meats and couldn't even be eaten with the same utensils.
Their customs were to be respected even though it was new and bizarre to me.
