Burekas (בורקס) are filled pastries that reached Israel through Sephardic and Balkan Jewish kitchens of Turkish and Ottoman lineage, and they function as a hand-held sandwich in everything but name: a savory filling fully enclosed in baked dough, eaten as a snack or a quick meal. The angle is the pastry doing two jobs at once, the wrapper and the structure. A bureka succeeds on a shell that bakes up crisp and flaky while staying intact around a moist filling, so the contrast is dry, shattering layers against a soft, well-seasoned center. Done well it is a clean, savory parcel that holds together in the hand and flakes cleanly; done badly it is a greasy or doughy lump, or a dry one with a thin, underseasoned filling rattling inside.
The build is about the dough as much as the filling. The pastry, thin phyllo built up in layers or a puff dough, is brushed with fat and wrapped around a portion of filling, then sealed and baked until deep gold. The classic fillings are firm: salty cheese, often feta or a mix; spiced mashed potato; spinach; sometimes mushroom or, in some kitchens, meat. The shape signals the contents, a tradition carried over so eaters can tell cheese from potato at a glance, and the top is usually finished with sesame or nigella seeds. Served warm, a bureka is frequently split and eaten with the standard accompaniments: a hard-boiled egg, pickles, sometimes a grated tomato relish or a hot sauce, which turn it from a pastry into a small composed meal. Good execution shows in layers that stay distinct and crisp, a filling that is moist and well salted without leaking, and a base that is baked through rather than damp from the filling above it. Sloppy versions are easy to spot: a soggy underside, a greasy shell that has absorbed its own fat, a pale soft crust, or a stingy, bland center that leaves the pastry doing all the work.
It shifts by filling and by dough. A cheese bureka eats rich and salty and is the most common; a potato one is milder and more filling; spinach or mushroom runs earthier; a meat version is heartier still. Flaky phyllo gives a lighter, shattering bite, while a puff-style dough is richer and more substantial. The eaten-out-of-hand version and the split, egg-and-pickle plated version are really two ways of using the same pastry, and a sweet filled pastry on similar dough is a separate preparation altogether. Those deserve their own articles rather than being crowded in here.