“00” flour (also known as “doppio zero” flour) is a finely ground flour that’s made from soft wheat. The numbers “00” refer to the flour’s grind size. Made from wheat grown and milled in Italy, this chef-tested flour has an average gluten-forming protein content of 13%. Its fine texture combined with its protein level makes it a go-to ingredient for making Neapolitan thin-crust pizza and airy focaccia. Pastry chefs also love using “00” flour for delicate pastries.