In a medium bowl, mix together the melted butter, 1 cup sugar, and egg until smooth. Stir in the molasses and extracts. Combine the flour, baking soda, salt, cinnamon, cloves, ginger, nutmeg and white pepper in another medium bowl. Add the wet ingredients to the dry ingredients and blend with a fork or wooden spoon. Cover, and chill dough overnight or for at least 2 hours.