-
In the bowl of an electric mixer fitted with the paddle attachment, cream the sugars and butter until light and fluffy, 1 to 1 1/2 minutes. Beat in the egg. Stir in the molasses.
-
In a separate bowl, whisk together the flour, salt, baking soda, ginger, cinnamon, allspice, and white pepper.
-
Add the flour mixture to the butter mixture in the three batches, mixing well after each addition. Scrape down the sides of the bowl. Refrigerate for at least 1 hour.
-
Position a rack in the center of oven. Preheat the oven to 350 degrees. Line a cookie sheet with parchment paper or aluminum foil.
-
Using a small cookie scoop, form balls approximately 1 inch in diameter, and place them 2 inches apart on the prepared cookie sheet. Bake for about 15 minutes. Remove to a wire rack to cool completely.