Country Clabber Biscuits
["5 c. unsifted flour", "3 heaping tsp. baking powder", "1 1/2 tsp. baking soda", "dash of salt (if desired)", "1/3 c. Canola oil", "1 3/4 c. sour milk"]
["Grease three 9-inch aluminum pie pans and set aside.", "Preheat oven to 425\u00b0."]
["flour", "baking powder", "baking soda", "salt", "Canola oil", "sour milk"]