Espresso powder is made of dehydrated, finely ground espresso beans. It’s often made with espresso grounds that have already been used for brewing, so making it at home is a great way to use your old grounds. If you’re looking for more things to do with coffee grounds, check out our guide.
Espresso powder, like espresso, is rich, dark, and very flavorful. It’s much more concentrated than instant coffee powder, which also has a harsher, almost sour flavor. You can use one in place of the other, though the flavors will differ and you’ll need to add about twice as much instant coffee powder.