Bee'S Lemon Jelly Filling
["6 egg yolks", "1 stick butter", "juice of 3 lemons", "rind of 1 lemon", "1 c. sugar", "pinch of salt", "1/2 c. flour", "1/2 c. hot water"]
["Melt butter in top of double boiler.", "Meanwhile, beat egg yolks well.", "Add sugar, salt and flour.", "Add hot water and lemon juice, then stir into melted butter.", "Cook in double boiler until thick, stirring all the time.", "Use as filling and/or icing for white cake."]
["egg yolks", "butter", "lemons", "sugar", "salt", "flour", "hot water"]