3/4 c. sugar
3 tbsp. cornstarch
2 egg yolks, slightly beaten
2 tsp. grated lemon peel
1/4 tsp. salt
3/4 c. water
3 tbsp. lemon juice
1 tbsp. butter

In small saucepan, combine sugar, cornstarch and salt; blend in water. Cook over medium heat until mixture boils, stirring constantly. Boil 1 minute. Blend a small amount of hot mixture into egg yolks. Return yolk mixture to saucepan. Mix well. Gradually stir in lemon juice, lemon peel and butter. Cook just until mixture starts to bubble, stirring constantly cool. Fills one jelly roll or 2 layers.