Old Fashioned Lemon Sauce - cooking recipe

Ingredients

1 cup sugar
2 tablespoons butter
1 egg, beat lightly
1 lemon, juice and zest of
1/2 cup boiling water

Preparation

Cream together the sugar and butter in a small pan over low heat. Add the slightly beaten egg and blend. Add the juice from 1 lemon and the zest from the lemon. Add the boiling water slowly and stir over the low heat till mixture thickens.