Wash potatoes thoroughly and cook in boiling water for 20-25 minutes. In the meantime peel and finely dice the onion. Wash the tomatoes, dab dry and cut into slices. Place tomato slices on a deep plate.
Wash the dill, dab dry and cut finely, except for a little to garnish. Drain the potatoes, rinse under cold water and peel. Dice the potatoes. Bring stock, onions and vinegar to the boil with a little salt and pepper.
Add 2 tablespoons of oil and mix with the potato cubes and dill. Allow to soak for about 30 minutes and cool. For the plaice, clean and wash spring onions and cut fine rings. Finely dice the bacon.
Wash the plaice under cold running water and dab dry with kitchen paper. Sprinkle plaice with lemon juice and season with salt and pepper. Then turn the plaice in flour. Put some oil in a frying pan and fry one plaice for 8-10 minutes, turning it until golden brown.
Keep the plaice warm. Fry the second plaice in the same way and keep warm. Clean the pan and leave the bacon in it until crispy. Add some butter to Eventeull and sauté the spring onions and prawns briefly.
Season with salt and pepper. Arrange the plaice on plates and spread the bacon-crab mixture on top. Garnish with dill and lemon. Season potato salad with salt and pepper and spread on the tomato slices.
Serve separately with plaice.