There are three official variants : pizza marinara , which is made with tomato , garlic , oregano and extra virgin olive oil , pizza Margherita , made with tomato , sliced mozzarella , basil and extra-virgin olive oil , and pizza Margherita extra made with tomato , mozzarella from Campania in fillets , basil and extra virgin olive oil .
This admits only three official variants : Pizza marinara , which is made with tomato , garlic , oregano and extra virgin olive oil ( although most Neapolitan pizzerias also add basil to the marinara ) , Pizza Margherita , made with tomato , mozzarella , basil and extra virgin olive oil , and Pizza Margherita Extra made with tomato , buffalo mozzarella from Campania in fillets , basil and extra virgin olive oil .