Lemon Cheze Filling Or Frosting - cooking recipe

Ingredients

4 Tbsp. butter (6 Tbsp. for 3 layers)
3 egg yolks (4 for 3 layers)
1 Tbsp. flour (1 1/2 Tbsp. for 3 layers)
1 c. sugar (1 1/2 c. for 3 layers)
2 lemons (grated rind and juice)
1/4 tsp. salt

Preparation

Mix.
Cook in double boiler until thick.
Spread onto two-layer cakes.