Wash and season the trout. Sprinkle with lemon juice. Clean or peel the vegetables, wash them and cut them roughly. Peel, quarter and finely dice 1 onion
Vegetables, onion quarters, Riesling, 1/2 l water, vinegar, spices, stock, some salt and approx. 1 teaspoon sugar in a large roasting pan. Cover and simmer for about 10 minutes
Take off 1/4 l brew. Cover the remaining stock and let it simmer at low heat for 10-12 minutes. Wash and finely chop the dill
Fry the diced onion in 2 tbsp. hot butter. Dust with flour and sauté briefly. Deglaze with 1/4 l stock, bring to the boil and simmer briefly. Stir in crème fraiche and continue to simmer for about 2 minutes. Fold in 50 g butter in pieces. Stir in dill. Season the sauce to taste
Arrange the trout with the Riesling cream and garnish. Serve with boiled potatoes and green salad
Drink: cool dry Riesling, e.g. from the VDP vineyard Schloss Johannisberg