3 cups flour
1 1/2 tsp. baking powder
3/4 tsp. baking soda
1/4 tsp. salt
1 Tb. ground ginger
1 3/4 tsp. ground cinnamon
1/4 tsp. ground cloves
6 Tb. unsalted butter
3/4 c. dark brown sugar
1 large egg
1/2 cup mild olasses
2 tsp. vanilla
1 tsp. finely grated lemon zest (opt.)