If you have a mortar and pestle that might help, and wire mesh to filter out tinier powder, to leave behind larger chunks…you could always save the smaller bits for other pumpkin spice things. Break up the bigger spices roughly. This may or may not be necessary for the cinnamon.
I haven’t tested this, and can’t test any of this at the moment. It definitely isn’t as easy as just throwing things into a coffee pot. The alt to this would be steeping everything in a mug as I described several days ago, using a quality wire mesh.
I found two recipes:
And
As said before, a kitchen scale works wonders.
First recipe:
5.3 grams Cinnamon, you could keep these whole but break into pieces to fit the bag if needed. Approx 1 stick. The more broken, the more cinnamon flavor.
1.7-1.8 grams Ginger root (dried, should look diced small pieces when buying)
1.2 grams nutmeg (use sharp knife to Carefully slice or Use a mortar and pestle, filter out smaller pieces)
1 gram allspice berries (crush with mortar and pestle)
.5 grams cloves (also crushed the same)
Second recipe:
the same as first but half the ginger, and eliminates the allspice.
Allspice gives a warm flavor, and some people are particular about clove flavor.
Once crushed and divided into tea bags, I bet they could be reused a few times at least, and you probably won’t need much in each bag.
Steep in the hot coffee itself.
Be sure to get empty tea bags.
If it’s possible in grinding them gently, you might get away with tsp measurements without a kitchen scale.
You can tweak these fairly easily as well, to suit your taste. I’m not 100% on the cinnamon coming through from a short steep.