Mark's rules for Pizza
1) The sauce is the most important ingredient. The sauce should be tangy, thick and deep.
2) The bottom should be doughy and soft. And it should have that powdery, flour like, stuff on the outside.
3) Mushrooms should be a default ingredient like cheese.
4) Most important, under no circumstances should any yellow or orange cheese be used on a pizza. If the cheese isn't white, it isn't right (for a pizza).