Lemon Cake Filling - cooking recipe

Ingredients

1 1/2 c. granulated sugar
6 Tbsp. flour
pinch of salt
3 egg yolks
1 c. cold water
grated rind of 1 lemon
1/2 c. or more lemon juice
1 Tbsp. butter

Preparation

Mix sugar, flour and salt thoroughly; add lemon juice and rind, then water, eggs and butter. Blend well and cook in double boiler until smooth. Stir constantly while boiling. Spread on white cake layers (5 or 6 thin layers).