Soak wheat in approx. 1/2 l cold water overnight
Add salt and cook wheat covered in soaking water for about 30 minutes. Drain and let cool off
Drain the beans. Clean, wash and drain spring onions and salad. Put 2-3 leaves of the salad aside if necessary. Cut the rest of the salad into strips. Cut spring onions into fine rings. Clean, wash and halve the tomatoes
Mix vinegar, salt, pepper and sugar. Whip the oil into the mixture. Mix wheat, beans, lettuce strips, tomatoes and spring onions with the marinade
Line a large bowl with salad leaves. Arrange wheat salad on top. Sprinkle with sliced Gouda