Wash wings and legs and pat dry. For the sauce, peel the garlic and press it through a garlic press. Mix with ketchup, soy and Worcester sauce and wine vinegar. Season with salt, pepper and dried chilli.
Coat prepared poultry meat with it. Cover and chill. Leave to stand for at least 30 minutes. In the meantime, rinse and drain the corn and beans for the salad. Peel and halve the onion and cut into strips.
Clean, wash and drain the lettuce leaves. Cut into bite-sized pieces. For the vinaigrette, mix lemon vinegar and 2 tablespoons of water. Whip the oil into it. Season with salt, pepper and sugar.
Mix the corn, beans, onion and salad with the vinaigrette and leave to stand. Season to taste again before serving. Place chicken pieces on aluminium foil on the hot grill. Cook the legs for about 18 minutes, turning occasionally, and the wings for about 10 minutes.
Serve garnished with lemon and parsley.