Butterscotch Sauce(Ice Cream Topping) - cooking recipe

Ingredients

1 well-beaten egg yolk
1/4 c. margarine
1/4 c. water
2/3 c. brown sugar
1/3 c. light corn syrup

Preparation

Combine all ingredients in double boiler; mix well.
Cook until thick.
Stir frequently.
Stir before serving.