Wash cucumber well or peel thinly. Grate the cucumber roughly on a grater
Cucumber shavings and soured milk mix. Peel onion and garlic, chop both or crush garlic. Wash the dill and chop except for a little bit. Stir everything into the soured milk
Season the cucumber cold peel with salt, pepper and lemon juice. Stir in oil
Rinse the crabs briefly in cold water and pat dry. Clean, wash and dice the tomatoes. Sprinkle prawns and diced tomatoes over the cold dish just before serving. Garnish with remaining dill. Serve with fresh farmhouse bread