Butter Cookies
["4 sticks butter", "2 c. sugar", "3 egg yolks", "4 c. plain flour", "1/2 tsp. baking soda"]
["Beat egg yolks.", "Cream the butter and sugar.", "Add flour and soda.", "Roll in balls the size of pecan, then press on pan with 2 fingers.", "Bake at 300\u00b0 for 8 to 10 minutes on greased cookie sheet."]
["butter", "sugar", "egg yolks", "flour", "baking soda"]