Divide the salad into three parts and place each in the center of a serving plate.
Also divide the lettuce leaves (cut the second one) and the pickled onion into three parts.
Spread out around each slide.
Thoroughly mix the oil, soy sauce, lemon juice, pepper and basil. With this dressing, pour the contents of the plates over the entire surface. Additionally, serve lemon slices, which, if desired, can still acidify the salad.