Sambousek (سمبوسك) is the half-moon stuffed pastry of the Levant, a round of dough folded over a filling and crimped shut, then fried or baked. It is eaten as a hand pastry rather than a built-up sandwich, but it does the same job a sandwich does: a sealed bread package around a savory core. The angle is the seal and the filling-to-shell ratio. The pastry has to close completely so a fried sambousek does not burst and weep into the oil, and the filling has to be moist enough to taste of itself but dry enough not to soak the dough. Get it right and it is a short, crisp or tender crescent with a hot, well-seasoned center. Get it wrong and it is either a thick dough shell with a mean smear of filling, or a split parcel that has bled its insides and gone greasy.
The build is dough, filling, fold, and cook. The dough is a soft enriched bread dough or a short pastry, rolled thin and cut into rounds. A spoon of filling goes onto one half, the round is folded over into a half-moon, and the edge is pressed and crimped, usually with a rope or fork pattern, so it is genuinely sealed rather than loosely pinched. The filling depends on the version but is always cooked or close to it before it goes in, so the pastry only has to crisp and warm rather than cook a raw core. Fried versions go into hot oil until deep gold; baked versions are brushed with egg and oven-set to a lighter color. A good sambousek shows a thin shell that shatters or yields cleanly, a filling that is moist and clearly seasoned, and an edge that held without leaking. A sloppy one is doughy and underfilled, or burst at the crimp with oil soaked into a collapsed seam.
It varies almost entirely by what goes inside. A cheese filling, usually akkawi or a white-cheese blend, runs salty and molten and reads soft and stretchy. A meat filling of minced lamb or beef cooked down with onion, pine nuts, and warm spice reads savory and rich. A spinach filling sharpened with lemon and sumac reads sour and green. The dough is the other axis: a bread dough bakes tender and bready, a short or yogurt pastry fries to a crisper, flakier shell. Each of those filled forms, the cheese and the meat especially, is a recognizable thing in its own right and deserves its own treatment rather than a footnote here. What sambousek reliably delivers across all of them is a sealed dough crescent around a cooked savory center, judged on whether the crimp held and the ratio was right.