Lemon Filling or Sauce

Ingredients

 * 2 cups boiling water
 * 1 cup sugar
 * 1/3 cup potato starch
 * 2 tbsp corn starch
 * Juice of 1 lemon
 * Rind of 2 lemons, grated
 * 1 tsp oil
 * 3 eggs

Instructions
In saucepan, mix corn and potato starch. Mix boiling water with sugar. Pour liquid ingredients into solid. Bring to a simmer. Stir in lemon juice, lemon rind and oil. Beat eggs thoroughly in large bowl. Slowly add hot lemon syrup to eggs while constantly whisking, until the liquid and eggs are mixed. Return mixture to saucepan on stove and cook until done.