"Pizza, it's... Oh wow." She just blinked at him for a moment, processing. "The gravity of the changes in the past six and a half centuries is just hitting me, I think. Globalization and fast food and pizza and hula hoops and wow, I make it sound like the only things that have happened have been culinary advances. that's what I get for being hungry. OK. Pizza is an Italian thing, thought the Americans sort of changed it and made it their own, like they tend to do with everything they touch... it's a thin yeast based bread covered in tomato sauce and cheese and then sometimes meat and vegetables."