Lemon Sponge Pie
["1 c. sugar", "1 c. milk", "4 Tbsp. lemon juice", "whites of eggs", "3 Tbsp. butter", "2 egg yolks", "2 Tbsp. flour"]
["Cream sugar, butter and egg yolks; beat well. Add lemon juice and flour; beat well. Add milk and beaten whites of eggs. Pour mixture into unbaked pie shell. Bake at 350\u00b0 approximately 45 minutes."]
["sugar", "milk", "lemon juice", "whites of eggs", "butter", "egg yolks", "flour"]