After eating in Da Mario (nor pizza neither pasta).

“The story goes that one day in 1889 the Queen of Italy, Margherita di Savoia, having heard so much about pizzas, and being at the time a pizzeria not a place for a Royal to visit, she invited at the Royal Palace of Capodimonte the famous pizzaiolo Raffaele Esposito to prepare this new dish, in order to satisfy her gastronomical curiosity. With a touch of simple creativity, Don Raffaele Esposito for the first time, introduced Mozzarella cheese to the already existing tomato pizza and decorated it with fresh basil leaves. He called this pizza with the colours of the Italian flag, Pizza Margherita in honour of his Queen.”

Extract from Succeso Napoletano, by Mario Molino.