Mix granulated sugar, powdered sugar, butter, and cooking oil together. Add eggs, mix again. Add flour, cream of tartar, vanilla, and baking soda mix together. Drop small balls of dough on cookie sheet. Pour a small amount of granulated sugar in a bowl. Dip bottom of a cup in the small bowl of sugar. Then slightly flatten dough with the bottom of cup. Bake in oven at 375 degrees. Bake for about 10-12 minutes or until lightly brown.