Clean, wash and cut the beans into pieces. Put the beans in boiling salted water and cook for 12-15 minutes. Peel onions and cut into strips. Clean, wash and chop the peppers. Melt the sugar in a pan until golden brown.
Deglaze with 5 tablespoons of vinegar and 3 tablespoons of oil while stirring. Drain the beans on a sieve. Put onions, peppers and beans in a bowl. Pour the marinade over it and let it soak well. Season again with salt, pepper and vinegar. Drain the bacon in a pan, remove and break into pieces. Cut bread into cubes. Heat 1 tablespoon of oil in the bacon fat. Fry the bread cubes in it until golden brown.
Drain the bacon in a pan, remove and break into pieces. Cut bread into cubes. Heat 1 tablespoon of oil in the bacon fat. Fry the bread cubes in it until golden brown. Arrange bean salad, bread and bacon in a bowl. Garnish with marjoram