Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1                    fish per person
   1      ounce         unsalted butter per fish
   2      tablespoons   sour cream
   2      tablespoons   water per fish
                        salt and pepper

Preparation:

The fish should be very fresh, gutted and scaled but not split. Melt the butter. When it foams, slip in the fish. Brown swiftly, turning once. Pour the sour cream and water around them, add salt and freshly ground pepper, and let the fish simmer for 10 minutes. Serve with small new potatoes boiled in their jackets: or chanterelle mushrooms fried in butter (if you can get them).