Using a small saucepan fry onion in butter until brown. Add flour
and stir with wooden spoon, cooking until mixture is light brown. Remove
from heat, add the liquid gradually. stirring continuously. Return to
heat and stir until boiling. Add remaining ingredients, reduce heat and
simmer 1 minute.
Vatiations
Tomato Sauce - add 1 cup chopped tomatoes and 1 Tbsp chopped bacon.
Simmer 15 minutes.
Mushroom Sauce - add 50g mushrooms, chopped and sauteed, or 1 small
can of mushrooms.
Onion Sauce - use 1 large onion instead of 1 small onion.