Now prepare the cake batter. Put the soft butter in a big bowl and beat, with an electric beater, till fluffy. Add the powdered sugar and beat, on slow speed, till combined. Keep aside about 1/3 cup of the flour aside and sieve together the remaining flour, baking powder and baking soda. Add this to the bowl along with all the powdered spices. Mix well (do not beat too much), using the beater on slow speed, until combined.