Matzah brei (sometimes spelled matzah brie) or fried matzo ("מצה ברײַ"; Hebrew: "מצה ברייט matzah breit" or "מצה בריי" or "מצה מטוגנת matzah metugenet, lit: fried matzah" or "מצייה") is a dish of Ashkenazi Jewish origins made from matzo fried with eggs.
Numerous recipes exist for this dish. Typically the dry matzo is briefly softened in hot water or milk, broken into pieces, mixed with eggs, and pan-fried in butter or schmaltz. It may be formed into a cake, like a frittata, or broken up and cooked like scrambled eggs. It can be savory or sweet. It may be combined, omelette-style, with meat and other foods, or it may be topped with sauces such as apple sauce, salsa or preserves. Some eat it with sugar, syrup, or jelly.
The dish is commonly eaten during Passover, when only unleavened bread is permitted. However, some Haredi Jews do not eat matzah brei during (the first seven days of) Passover because they do not eat gebrokts, matzo that has come into contact with water. Most other Jews do not follow this custom.