Yeast is the one ingredient a pizza dough needs the most. Yeast is the primary leavening agent in dough, which means it’s what causes the pizza dough to rise. The best pizza dough recipes produce dough that rises quickly, making for an airy and bubbly crust. Many people know what yeast does and what types of recipes usually call for it, but how yeast works is another story. In this blog we’ll cover how yeast works and what types of yeasts are used to make pizza dough.