Buckwheat is a common ingredient for gluten-free pizzas in northern and eastern Europe, including Germany, where you can find buchweizen pizza on pizzeria menus. During Peter’s business-travels to Berlin, he scoped out a number of pizzerias that offer gluten-free buckwheat crusts. Some use 100 percent buckwheat, but he prefers the approach of the pizzeria Cielo di Berlino, where they blend the buckwheat with other gluten-free flours—as we do here, too.