Russian Boiled Fish

• Clean and season a whole fish and let boil with 1 sliced onion, 1/2 cup of vinegar, a few slices of lemon and 2 sprigs of parsley.
• Add a tablespoonful of butter and let cook until tender.
• Remove the fish to a platter; mix the sauce with 1 tablespoonful of brown sugar, a pinch of ginger, cinnamon and nutmeg and the juice of a lemon.
• Let boil well; then thicken with the yolks of 2 beaten eggs and pour over the fish.

Serve cold. Garnish with lemon-slices and olives.