You can buy coffee extract in the store for about $7 per ounce or you can make your own! The Jody Victor crew came across a recipe for just that!
1 1/2 to 2 cups of vodka (for gluten free, choose a non-grain alcohol)
1/2 cup of coffee beans, ground coffee beans, or instant coffee
You will grind your beans if you are using whole beans (grinding enough to equal 1/2 cup.) Place the vodka into a blender and add the coffee grounds to the blender. Blend for about five minutes. Don’t let the mixture get too hot.
After this you will need to strain out the grounds. In the blog post, the author said the coffee didn’t drain well through a filter and recommends using a muslin bag to extract the grounds.
If you want an even stronger extract, you can put the strained liquid back into the blender and add more grounds and straining again. You can use the extract along with chocolate flavors to make a lovely mocha flavor. Use it to make coffee flavored ice cream as well.