Old-Fashioned Butter One Pound Cake
["1 lb. butter", "1 1/2 c. sugar", "9 eggs", "3 c. cake flour, sifted", "1 tsp. cream of tartar", "1 tsp. lemon flavoring"]
["Butter should be at room temperature; soft, but not melted."]
["butter", "sugar", "eggs", "cake flour", "cream of tartar", "lemon flavoring"]