* Use either fresh or frozen cranberries that have been coarsely chopped. In a medium mixer bowl, mix the flour, sugar, baking powder, salt and the baking soda together. Stir in the orange juice, orange peel, shortening and the egg. Mix until well blended. Stir in the cranberries and the nuts, if used, and turn into greased muffin tins. Bake at 180ºC for 20 to 25 minutes or until done. Use a shorter baking time if small muffin tins are used.