1. Preheat the oven to 180°C (350°F).

2. In a bowl, cream together the butter and sugar until light and fluffy.

3. Add the eggs one at a time, beating well after each addition.

4. Sift together the flour, baking powder, spices, and salt. Gradually add to the wet mixture, stirring until just combined.

5. Pour the batter into a greased cake pan and bake for 45-50 minutes or until a toothpick inserted into the center comes out clean.