Filo or phyllo is a very thin unleavened dough used for making pastries such as baklava and börek in Middle Eastern and Balkan cuisines. Filo-based pastries are made by layering many sheets of filo brushed with oil or butter; the pastry is then baked.
Contrast with puff pastry, which is made by layering pastry dough with butter and folding it to create thousands of layers.
