For the mountain trout rolls, heat the washed carcasses in half the amount of oil, add diced vegetables and just lightly fry, deglaze with wine, simmer briefly and pour water. Add spices, bring to the boil and simmer for about 20 minutes.
Strain stock, strain and simmer until reduced to ½ l. Salt and pepper skinned trout fillets, roll up and fix with toothpicks.
Steam in light stock and remaining oil for about 3-4 minutes. Remove, remove toothpicks and keep warm.Stir Cremefine into the stock and assemble with cold Thea, froth with a hand blender, pour over the mountain trout rolls and garnish with trout caviar.