First you need to make the sauce by mixing sour cream with parsley, garlic, salt and pepper, passed through a press. Mix everything well. Cut the onion into rings and marinate in vinegar. Cut the vegetables into strips.
Boil the meat and fry in a hot frying pan with oil for several minutes so that it does not lose its juiciness. Lubricate the pita with sauce and put all the ready-made ingredients, roll it into a roll and fry the grill on a pan on both sides.