Clean the beans, wash them. Cut beans in thirds, wax and princess beans possibly in halves. Cook the beans in boiling water for 5-7 minutes. Drain and rinse with cold water
Onions peel, halve and in narrow columns cut. Mix vinegar and sugar. Fold in oil in a thin stream. Season to taste with salt and pepper. Add onions and stir well. Mix the vinaigrette with the beans. Cover the vinaigrette and let it stand for about 1 hour. Season salad again with salt, pepper and vinegar. Arrange on a plate and sprinkle with red berries
Waiting time approx. 1 hour