Matzo (or matzah) brei, a fried egg and matzo scramble, is a Passover breakfast favorite. And, while there are endless variations on this beloved dish, Michelle Streit Heilbrun (heiress to the Streit Matzos empire) outdoes them all with this lox and onion version from her outstanding Matzo: 35 Recipes for Passover and All Year Long: A Cookbook.