2 tablespoons of  butter
2 tablespoons of flour
1 to 1 1/2 cups of milk
Salt to taste, if desired
Freshly ground white pepper to taste, optional, may use black

Melt the butter in a medium size saucepan. Add the flour and immediately start stirring with a wire whisk. Add the milk all at once, stirring rapidly with the whisk. Add the salt and pepper. Cook, stirring frequently, about 5 minutes. Makes 1 to 1  1/2 cups.