Add the cold brew into the whipped cream dispenser. Add the nitrogen cartridge and shake the dispenser vigorously for 30 seconds.
Dispense the nitro cold brew into a tall glass and let it sit for 30 seconds, to allow the foam to rise to the top.
Notes
One serving is 16 fluid ounces. Using a nitro cold brew coffee maker: Mix the cold brew concentrate and filtered water. Transfer the cold brew into the keg of the nitro cold brew coffee maker. Nitrogenate the coffee maker, then shake the keg very well for 20 seconds. Let everything sit for an hour. Pour the fresh nitro cold brew into a tall glass and enjoy immediately. TO STORE: This is best enjoyed fresh, though if you have leftovers, you can store it in an airtight container in the refrigerator for up to 3 days.