Fit a funnel to a Ball® Wide Mouth Quart Jar. Spoon in half of the all-purpose flour. Knock the jar firmly against a cutting board or towel-covered surface to settle the flour.
Add in the baking soda, salt, and brown sugar. Use your fist or the back of a spoon to pack the brown sugar down firmly.
Add in the ginger, cinnamon, allspice, cloves, and black pepper, if using.
Top with the remaining all-purpose flour.
Close the lid on the jar. Top with fabric secured with a rubber band, and then tie on a ribbon to attach the tag and cookie cutter, if using.
Notes
To make the cookies: Using an electric mixer, combine ⅔ cup softened butter, 1 large egg, ⅔ cup molasses, and 1 teaspoon vanilla. Add in the jar of cookie mix and mix on low until combined. The dough will be quite thick. Divide the dough in half, and wrap each half in plastic wrap and form into a disc. Chill for at least 2 hours. After chill time, heat oven to 350°F. Line a baking sheet with parchment paper or a silicone baking mat. Remove one disc of the raw cookie dough from the fridge and let warm on the counter for 10 minutes, then unwrap, and roll on a floured surface until ¼-inch thick. Cut out cookies using cookie cutters, and place 1-inch apart on the prepared baking sheet. Gather scraps, reroll, and cut more cookies. Bake for 7-10 minutes depending on the size of the cookie. Let cool for 5 minutes on the baking sheet, then transfer to a baking rack to cool completely before decorating.