Chess Pie
["1 stick butter", "1 c. sugar", "3 egg yolks", "1 tsp. grated lemon rind", "1 tsp. grated orange rind", "1/4 tsp. salt", "2 Tbsp. lemon juice", "9 inch pastry shell, unbaked or 6 individual tart shells"]
["Cream the butter and sugar and add the egg yolks one at a time.", "Beat thoroughly after each addition.", "Blend in the grated lemon and orange rinds, salt, and lemon juice.", "Bake in a 9 inch pastry shell or 6 individual tart shells", "in a 350\u00b0 oven for 25 to 30 minutes. Serves six.", "Do not use light butter/oleo, it doesn't work."]
["butter", "sugar", "egg yolks", "lemon rind", "orange rind", "salt", "lemon juice", "pastry shell"]