Chop lettuce, onion, ginger, garlic and red pepper, chop coriander and put in a container. Add vinegar, sugar, salt, soy sauce, sesame oil and chicken essence, stir well, boneless chicken legs, blanch them, cook them in a pot for six times, take them out and drain them. Heat the pan, pour the oil, fry the chicken legs until golden brown, take out the pan, cut into strips, put them in a plate, and put the stirred lettuce on the meat.