Old West Sourdough Biscuits

2 cups flour
3 teaspoons baking powder
1 teaspoon salt
1/4 cup shortening
1 cup sourdough starter
1/3 cup milk

Combine dry ingredients in bowl; mix. Cut in shortening until it looks like coarse meal. Add sourdough starter to milk. Stir with fork until moist. Do not over-stir. Turn dough out on lightly floured board, then gently pat into a 10-inch circle. Cut; place on ungreased cookie sheet and bake at 450 degrees F for 12 minutes.