Perfect Sugar Cookies
["2-1/2 c. flour", "1/2 tsp. baking soda", "3/4 tsp. salt", "1/2 c. butter", "1/2 c. shortening", "1 c. sugar", "1 tsp. vanilla", "1 egg", "2 Tbsp. milk"]
["Mix flour, baking soda, and salt; set aside.", "Cream butter, shortening, sugar and vanilla; add egg and beat until fluffy. Stir in flour mixture; blend in milk to form a dough.", "Roll dough into balls and flatten with glass dipped in water and sugar.", "Bake at 400 degrees for 9 minutes or less.", "Don't over cook."]
["flour", "baking soda", "salt", "butter", "shortening", "sugar", "vanilla", "egg", "milk"]