Butterscotch Sauce - cooking recipe

Ingredients

1 egg, lightly beaten
2/3 cup brown sugar
1/3 cup light corn syrup
1/4 cup water
1/4 cup butter

Preparation

Combine sugar, corn syrup, water and butter in a saucepan. Cook over medium heat, stirring occasionally, until butter melts and sugar dissolves. Remove from heat.
Lightly beat egg. Pour hot sugar mixture into the egg in a steady stream, whisking constantly. Return mixture to saucepan. Cook over low heat, stirring constantly, until mixture has thickened; do not boil.