Remove eyes and gills from whole cleaned carp. Salt inside and out, sprinkle with 1 Tablespoon vinegar and spread 1 Tablespoon freshly grated horseradish root or prepared horseradish inside cavity.

Place fish in a well-buttered baking dish, brush with butter and bake in 350 degree Fahrenheit oven about 45-50 minutes basting frequently with butter and a total of 2-3 Tablespoons of water.

When fish is fully cooked, fork-blend 1/2 cup sour cream with 3-4 Tablespoons freshly grated horseradish or prepared horseradish. Season to taste with salt and sugar and pour over fish. Bake for another 10 minutes or so.

Before serving, garnish with chopped parsley or a combination of chopped parsley, dill and chives. Serve with boiled potatoes.