Lemon Sauce - cooking recipe

Ingredients

1/4 c. sugar
2 Tbsp. cornstarch
4 Tbsp. cold water
1 c. boiling water
1 Tbsp. butter
1 egg, well beaten
dash of salt
juice and grated rind of 1 lemon

Preparation

Combine sugar and cornstarch; add cold water.
Pour boiling water over mixture.
Add butter; cook over very low heat or in top of double boil until thick, about 15 minutes.
Pour slowly over beaten egg, whisking all the while.
Lastly, add lemon juice and rind.
Serve hot over gingerbread.