Lemon Pie - cooking recipe

Ingredients

1 lemon
1 1/2 c. sugar
3 egg yolks
1/4 c. cornstarch
1/2 tsp. salt
1 Tbsp. butter
1 1/2 c. boiling water

Preparation

Mix sugar and cornstarch; stir.
Add lemon juice and egg yolks.
Set aside.
In a pan, boil water and grated lemon rind. Add butter and pinch of salt.
Add the two together.
Cook until thick.