Combine the flour, ginger, cinnamon, cloves, nutmeg, baking soda, and salt in a bowl. Mix well and set aside.

In a large bowl, cream together the softened butter and brown sugar until light and fluffy. Add the molasses and egg, mixing until combined.

Gradually add the flour mixture to the butter mixture, stirring until a dough forms. Wrap the dough in plastic wrap and chill in the refrigerator for at least 1 hour.

Preheat your oven to 350°F (175°C). Roll out the chilled dough on a floured surface to about 1/4 inch thick.

Cut out gingerbread men shapes using a cookie cutter.

Place the cut-out cookies on a baking sheet lined with parchment paper. Bake for 8-10 minutes or until the edges are firm.

Mix the powdered sugar, warm water, meringue powder, and cream of tartar in a bowl until smooth. If needed, add more water to reach your desired consistency.

Decorate the cooled cookies with royal icing and sprinkles as desired.