Lemon Filling For Cake - cooking recipe

Ingredients

1 c. sugar
1 tsp. cornstarch
1 tsp. salt
4 egg yolks
2 lemons, grated
1 c. water
2 Tbsp. butter

Preparation

Mix dry ingredients.
Add egg yolks, juice and grated rinds of lemons and water.
Cook over water until thick and add butter. Spread on cake.