Mix and sift flour, baking powder, soda, salt and spices. Cream shortening until soft and smooth; gradually add sugar, creaming until fluffy, and beat in eggs. Add flour mixture alternately with combined molasses and milk, beating until smooth after each addition. Turn into greased sqare pan and bake in moderate oven (350) for 40 to 50 minutes. Yield: 1 (8 inch) square cake.