Well, my initial response would be there are no restrictions. But now that you bring up the subject, I guess I really don't know! We brought some back in 2019 without difficulty (maybe a case?), so this time we just loaded our luggage without even thinking about it. The customs agent asked if we were bringing back fruits, vegetables, meat, etc. I said nope, just wine and olive oil. He didn't ask how much, he wasn't interested. "Next..."