Wash the bean seeds and cook in lightly salted water for 50-60 minutes. Pour onto a sieve and drain. In the meantime clean, wash and chop the beans and cook them in boiling salted water for about 15 minutes.
Peel and finely chop the onion. Whip lemon juice and 3 tablespoons of oil. Season with salt, pepper, sugar and thyme. Stir in diced onion. Clean, wash and slice the tomatoes.
Clean, wash and drain the salad and cut into large pieces. Drain the string beans and let them drain. Put all ingredients in a bowl and mix with the marinade. Heat 1 tablespoon of oil in a pan and fry the sage leaves briefly in it, remove.
Arrange salad on plates and serve garnished with thyme and sage leaves. Flatbread tastes good with it.