Creamy Pralines
["3/4 c. light brown sugar", "3/4 c. granulated sugar", "1/2 c. evaporated milk", "1/4 tsp. cream of tartar (optional)", "1/4 c. margarine", "1 tsp. vanilla", "1 c. pecans"]
["Cook together sugars, milk and cream of tartar; stirring constantly until firm soft-ball or 232\u00b0.", "Add pecans and beat. Drop onto waxed paper by spoonfuls."]
["light brown sugar", "sugar", "milk", "cream of tartar", "margarine", "vanilla", "pecans"]