Sweet Potato Biscuits
["2 c. flour", "1 tsp. baking soda", "1 tsp. salt", "1/3 c. shortening", "1 Tbsp. sugar", "1 c. sweet potatoes, cooked and mashed", "3/4 c. buttermilk"]
["Sift flour, salt, soda and sugar together. Cut in shortening. Add sweet potatoes. Stir in buttermilk. May need more to make stiff dough. Turn onto floured board and knead lightly. Roll out and cut into biscuits. Bake at 450\u00b0 until golden brown."]
["flour", "baking soda", "salt", "shortening", "sugar", "sweet potatoes", "buttermilk"]