Mix the filling
12 minFinely chop the onion and pepper, rub them with a pinch of salt, and squeeze out their liquid by hand. Onion that is not drained will make the inside of the bread soggy and leave the dough undercooked. Knead the ground beef with the drained onion and pepper, chopped parsley, diced tail fat, and all the spices by hand for 4 minutes.