Preheat oven to 350°F.
Whisk together the flour, baking soda, ginger, cinnamon, cloves, salt and cayenne pepper in a medium bowl.
Use an electric mixer to beat the butter in a large mixing bowl until light and fluffy. Add the brown sugar and 1/2 cup white sugar and beat until blended. Blend in the molasses. Add egg whites one at a time, mixing well after each addition. Add the flour mixture 1/3 at a time and beat until blended after each addition.
Spread 2 to 4 tablespoons sugar on a small plate. Shape the dough into 3/4-inch balls and roll in the sugar until lightly coated. Arrange the balls 1 inch apart on a cookie sheet lined with baking parchment.
Bake 8 to 10 minutes or until brown. Cool on the cookie sheet for 2 minutes. Remove to a wire rack to cool completely. Store in an airtight container