01 - Whisk together flour, ground ginger, cinnamon, cloves, nutmeg, baking soda, and salt in a large bowl; set aside.
02 - Beat unsalted butter with dark brown sugar using an electric mixer until light and fluffy, approximately 2 minutes.
03 - Add molasses, egg, and vanilla extract to the creamed mixture; mix until fully combined.
04 - Gradually add the dry ingredient blend to the wet mixture, stirring until a soft dough forms.
05 - Divide dough in half, form each into a disc, wrap with plastic wrap, and refrigerate for at least 45 minutes.
06 - Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
07 - Roll chilled dough on a lightly floured surface to 1/4 inch (6 mm) thickness, then cut desired shapes using cookie cutters.
08 - Place cut shapes onto prepared baking sheets; for ornaments, create a hole near the top using a straw.
09 - Bake for 10 to 12 minutes until edges are set; allow cookies to cool completely on wire racks.
10 - Apply royal icing and optional decorations; let icing set thoroughly before handling or hanging ornaments.