01 - Heat the oven to 350°F and line baking sheets with parchment.
02 - Whisk flour, cloves, baking soda and salt together.
03 - Mix brown sugar with zest, then beat in softened butter. Add egg and orange extract.
04 - Work the flour mixture into the butter mixture in portions, scraping the bowl. Divide dough in two.
05 - Roll on a lightly floured surface to about 1/8 inch thick. Cut with a roughly 3-inch cutter and transfer to the trays; add optional sugar.
06 - Bake each tray about 9–11 minutes, until the edges deepen slightly in color and feel firm.
07 - Rest cookies on the tray for three minutes, then move to a rack. Cool completely before packing.