In Australia, it’s customary for waiters to offer to sprinkle Parmesan cheese on your Italian dishes. In Italy, it’s not. In fact, it’s considered downright rude to ask for it, especially if you’re eating pizza. That’s because the cheese is seen as incompatible with pizza, much the way you might think ketchup shouldn’t go on salmon. That said, if a waiter does offer you extra cheese on a dish, it’s perfectly fine to accept it.
12 strange etiquette rules from around the world
These manners might seem backwards to you, but they're the norm in other countries.
Italy: put down the Parmesan