Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      tablespoons   butter
   2      tablespoons   chopped onions
   2      tablespoons   flour
   2 1/2  cups          hot milk
     1/2  teaspoon      salt
     1/4  teaspoon      white pepper
   1      pinch         grated nutmeg

Preparation:

In small, heavy saucepan, melt butter. As soon as butter is melted, add onions and cook over medium flame for 3 minutes, or until onions begin to turn golden. Stir in flour. Stir in milk and cook, stirring constantly until smooth. Add salt, pepper, and nutmeg, and cook over low flame for 30 minutes, stirring occasionally. Strain. Béchamel sauce may be prepared in advance, and keeps well in refrigerator for more than two weeks. Makes 2 cups of sauce. Recipe Source: THE ART OF FRENCH COOKING by Fernande Garvin