Grandma Hampton'S Whiskey Cookies
["1/2 lb. (2 sticks) butter", "1 c. sugar", "1 egg, separated", "2 c. unsifted flour", "1/4 c. whiskey or 1/8 c. whiskey and 1/8 c. milk", "3/4 c. chopped nuts, almonds or pecans"]
["Mix ingredients in order given.", "Divide dough in half and pat in a jelly roll pan or cookie sheet.", "Beat egg white on a flat plate with a fork until frothy.", "Brush on dough and sprinkle with nuts; sprinkle with cinnamon if desired.", "Bake 8 to 10 minutes at 375\u00b0 or until edges brown.", "Cool slightly and cut into squares or triangles."]
["butter", "sugar", "egg", "flour", "whiskey", "nuts"]