I'm a big fan of pumpkin spice lattes, and I've been experimenting with a few recipes for making my own pumpkin spice sauce at home. It's pretty simple; simmer equal parts sugar and water with varying amounts of pumpkin puree, nutmeg, cinnamon, cloves, allspice, ginger, etc. for about 20 minutes or so. The problem is that none of these spices are soluble in water, and I can't seem to strain out the solids enough to where it won't make my coffee "gritty."

I've tried filtering the mixture through a metal sieve used for cold brew, but the grains are much smaller than ground coffee so it (mostly) passes through the pores. I tried cheesecloth but it clogs up quickly and turns into a mess. The most success I've had is pouring the mixture through paper coffee filters straight from the stove while it's still boiling hot, but this has a few issues:

1. The mixture forms a "skin" at the bottom of the coffee filter and the flow slows to a few drips at a time as it cools.
2. To hurry things along, I wind up going back and forth between two containers using a clean coffee filter each time, but I wind up wasting a ton of filters this way.
3. Doing it like this takes hours and it still laves a gritty, sludgy mouthfeel in my coffee.

Honestly, this process is making me feel quite stupid. What do I do?

I'm a big fan of pumpkin spice lattes, and I've been experimenting with a few recipes for making my own pumpkin spice sauce at home. It's pretty simple; simmer equal parts sugar and water with varying amounts of pumpkin puree, nutmeg, cinnamon, cloves, allspice, ginger, etc. for about 20 minutes or so. The problem is that none of these spices are soluble in water, and I can't seem to strain out the solids enough to where it won't make my coffee "gritty."

I've tried filtering the mixture through a metal sieve used for cold brew, but the grains are much smaller than ground coffee, so it (mostly) passes through the pores. I tried cheesecloth, but it clogs up quickly and turns into a mess. The most success I've had was pouring the mixture through paper coffee filters straight from the stove while it was still boiling hot, but this has a few issues:

1. The mixture forms a "skin" at the bottom of the coffee filter and the flow slows to a few drips at a time as it cools.
2. To hurry things along, I wind up going back and forth between two containers using a clean coffee filter each time, but I wind up wasting a ton of filters this way.
3. Doing it like this takes hours and it still laves a gritty, sludgy mouthfeel in my coffee.

Honestly, this process is making me feel quite stupid. What do I do?