Pizza is a dish of Italian origin consisting of a
usually round, flat base of leavened wheat-based dough topped with
tomatoes, cheese, and often various other ingredients (such as
anchovies, mushrooms, onions, olives, vegetables, meat, ham, etc.),
which is then baked at a high temperature, traditionally in a wood-fired
oven. A small pizza is sometimes called a pizzetta.
A person who makes pizza is known as a pizzaiolo. In Italy, pizza served
in a restaurant is presented unsliced, and is eaten with the use of a
knife and fork. In casual settings, however, it is cut into wedges to be
eaten while held in the hand.