buffalo mozzarella(made from buffalo milk)from Campania in fillets,
and extra virgin olive oil.
Pizza was the only food of the humble people in Naples during winter, and that "in Naples pizza is flavored with oil, lard, tallow, cheese, tomato, or anchovies".
Purists, like the famous pizzeria “Da Michele” in Via C.Sersale (founded: 1870)  consider there to be only two true pizzas – the “Marinara” and the “Margherita” and that is all they serve. The Marinara is the oldest and has a topping of tomato, oregano, garlic, extra virgin olive oil and usually basil. It was named “Marinara” not, as many believe, because it has seafood on it (it doesn't) but because it was the food the fishermen ate when they returned home from fishing trips in the Bay of Naples. The Margherita is attributed to baker Raffaele Esposito. Esposito worked at the pizzeria "Pietro... e basta così" (literally "Peter... and that's enough") which was established in 1780 and is still operating under the name "Pizzeria Brandi". In 1889, he baked three different pizzas for the visit of King Umberto I and Queen Margherita of Savoy. The Queen's favorite was a pizza evoking the colors of the Italian flag – green (basil leaves), white (mozzarella), and red (tomatoes). This combination was named Pizza Margherita in her honor.
The genuine Neapolitan pizza dough consists of Italian wheat flour (type 0 or 00, or a mixture of both), natural Neapolitan yeast or brewer’s yeast, salt and water. For proper results, strong flour with high protein content (as used for bread-making rather than cakes) must be used. The dough must be kneaded by hand or with a low-speed mixer. After the rising process, the dough must be formed by hand without the help of a rolling pin or other mechanical device, and may be no more than 3 mm (¹⁄₈ in) thick. The pizza must be baked for 60–90 seconds in a 485 °C (905 °F) stone oven with an oak-wood fire. When cooked, it should be crispy, tender and fragrant. Neapolitan pizza has been given the status of a “guaranteed traditional specialty” in Italy. This allows 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, sliced 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.