Grandma'S Sugar Cookies
["2 c. sugar", "3 eggs", "1 c. shortening", "1 c. sour milk (add 1 tsp. ??? to plain milk)", "4 to 6 c. flour (enough to roll dough)", "1 tsp. soda", "2 tsp. baking powder", "1 tsp. salt", "3 tsp. lemon or vanilla flavoring (approximately)"]
["Mix together; roll.", "Cut and bake at 350\u00b0 for 10 to 15 minutes."]
["sugar", "eggs", "shortening", "sour milk", "flour", "soda", "baking powder", "salt", "lemon"]