Wash the potatoes and cook covered for about 20 minutes. Quench, peel and let cool
Peel and chop the onion. Clean, wash and chop the peppers. Steam onion in hot oil. Vinegar,
Stir in 1/8 l water and stock, bring to the boil. Cut potatoes into slices, mix with stock and paprika. Leave to stand for about 1 hour
Crumble the toast. Wash herbs and, except for some dill, chop. Peel and grate horseradish and sprinkle with lemon juice. Mix the toast, herbs, egg and horseradish, except for a little bit. Season with salt and pepper
Wash the fish, pat dry and cut into large pieces. Spread horseradish mixture on top. Cook in the hot oven (electric cooker: 200 °C/recirculating air: 175 °C/gas: level 3) for about 20 minutes. Season potato salad to taste. Arrange and garnish