1 tb Margarine Or Butter
1    Onion; Thinly Sliced
4 oz Mushrooms; 1 can, *
1/2 ts Worcestershire Sauce
1/8 ts Pepper

* Use 1 4-oz can of mushroom stems and pieces.
Melt margarine in a small skillet. Add onion slices and cook and stir
until tender. Stir in remaining ingredients and heat through. Serve,
hot, over patties.