Sift first 4 ingredients 3 times.
Mix egg, 2 tablespoons sour cream, butter, and milk.
Add to first mixture and beat well.
Drop by tablespoon onto hot greased griddle, making each cake no larger than 2 inches in diameter, and brown on both sides.
Put on hot platter and top each cake with 1 tablespoon sour cream, then 1 teaspoon caviar.
Also good with apricot or strawberry jam.
Makes about 2 dozen.