Melt the butter in a 1 1/2 to 2 quart saucepan and add the flour, stirring with a wire whisk. When blended and smooth, add the stock, stirring rapidly with the whisk. When thickened, let it simmer for about 5 minutes, stirring often. Add the cream, salt, and pepper. Let it simmer for 5 minutes longer. Makes 5 cups