PREHEAT oven to 450°F. Sift flour, baking powder, salt, cream of tartar and sugar in medium bowl. Cut in butter until mixture resembles coarse crumbs. Add milk; stir with fork or spatula until soft dough forms.
PLACE on lightly floured surface; knead 8 to 10 times or until smooth. Pat dough lightly into 1-inch thick circle. Cut with floured 2-inch cookie cutter to make 8 biscuits. Place on ungreased baking sheet.
BAKE 10 to 12 minutes or until golden brown.