4 tbsp. butter
1/4 c. unsifted flour
2 c. milk
1/2 tsp. salt
1/4 tsp. white pepper
1 tsp. onion powder
3/4 c. Swiss cheese

Melt butter in a double boiler top over direct heat. Blend in flour, slowly add milk and heat, stirring until thickened. Mix in salt, pepper and onion powder. Cover and cook 1 hour over simmering water, beating occasionally. Add Swiss cheese 1/4 cup at a time beating until smooth. Add additional milk, tablespoon at a time if sauce is too thick. Serve hot over white meat or veggies.