I asked people from overseas this question in a survey. According to the results, ninety seven percent said they like mushrooms and ninety six percent said pepperoni. People said they like cheese the best. But pretty much everyone wants cheese on their pizza. Tomato, ham, bacon, peppers and olives were also popular (88-94%). Cream, peas, mayonnaise and fruit were the least popular (11-19%). I wasn't surprised by the results. Mayonnaise is not usually on pizza outside of Japa