Passover lasts an entire week. A very, very, very long pizza-less and pasta-free week. Fortunately, bubbes have come to the rescue. Over many generations, some pretty inventive grandmas and great-grandmas have come up with Passover-friendly dishes to sustain their hungry families and friends during that week — recipes that are inexpensive, made with easy-to-find ingredients, and don't require much work. Matzo brei is exactly that. It remains a staple breakfast and lunch food, and it's been around so long for one other reason: it tastes great.