Peel and wash the potatoes and cook them in boiling salted water for about 20 minutes. In the meantime, wash and peel the carrots, cut them into slices and then into approx. 5 cm long strips. Clean and wash the leek and cut it into 5 cm long strips as well.
Trout wash. Bring white wine, 2 litres of water, vinegar with bay leaf, peppercorns, approx. 1 teaspoon of salt to the boil and leave the trout to simmer for approx. 10 minutes. Do not let it boil any more! In the meantime, heat the fat in a pan and steam the vegetables in it for about 5 minutes.
Season with salt and pepper. Fold in creamed horseradish. Arrange vegetable strips with potatoes and trout on a plate. Garnish with lettuce leaf, lemon slices and dill.