Peel the garlic and press it through a garlic press. Wash parsley and cut into fine strips. Mix mayonnaise, yoghurt, garlic and parsley. Season with salt, pepper and lemon juice and let it stand.
For the salad, clean, wash and slice the tomatoes. Peel onion and cut into rings. Clean, wash and cut iceberg lettuce into bite-sized pieces. For the vinaigrette season vinegar with salt, pepper and sugar.
Beat olive oil into it. Mix tomatoes, onion rings, iceberg lettuce, olives and vinaigrette. Heat frying oil. Cook deep-frozen squid rings for about 3 minutes. Arrange squid rings garnished with black olives and lemon slices on a plate.
Arrange salad and dip in bowls and garnish with parsley. Serve with fresh flat bread.