Lemon Sauce - cooking recipe

Ingredients

1/2 c. sugar
1 tsp. cornstarch
1/8 tsp. salt
1 c. boiling water
2 Tbsp. butter
2 Tbsp. lemon juice
1 egg yolk, beaten

Preparation

Mix first 3 ingredients; then add water.
Cook 5 minutes and let cool.
Then add butter, lemon juice and egg yolk.
Recook for 3 minutes.
Delicious!!