Gingerbread spice and pumpkin spice are pretty similar and contain the same ingredients. However, while they have similar ingredients, the ingredient ratio differs significantly. Thus, their tastes are different. It would be best if you did not use pumpkin spice instead of a gingerbread spice mix. To make gingerbread spice, you’ll have to mix some finely ground ingredients. This includes two tablespoons of cinnamon, ginger, and allspice, one tablespoon of cloves and nutmeg, and a pinch of black pepper.   Ensure that you use finely ground ingredients. Mix them in a clean bowl and store them in an airtight container.