Bechamel Sauce

Directions

1. 1
   In a skillet or deep heavy saucepan, heat butter and onion together, but do not brown.
2. 2
   Stir in flour and remove pan from the burner.
3. 3
   Add salt and hot milk or hot stock and continue to stir until the sauce is smooth.
4. 4
   Return to the heat, stirring constantly until sauce comes to a boil.