* Fillets may be fresh or frozen. ~- Melt butter in a frypan. Place fish in frypan and pour hot water over fish. Bring to a boil, cover, lower heat and simmer gently for 10 minutes. Meanwhile slice the 4 hard cooked eggs and the pickles. Drain fish, cool and cut into cubes. Prepare salad sauce by blending mayonnaise, sour cream, lemon juice, mustard, salt and pepper. In a separate bowl gently mix fish cubes, egg and pickle slices and capers. Arrange fish mixture in individual dishes and spoon salad sauce over tops. Chill for 30 minutes. To garnish, cut remaining egg into eight pieces and chop beet slices.