To make nitro cold brew in a kegerator, you'll need a few key components: a keg, a tap system, a stout faucet, and a nitrogen regulator. Here's a step-by-step guide on how to set it up:
1. Start by preparing your cold brew coffee. You can use your favorite coffee beans and grind them to a coarse consistency for optimal extraction. Add the coffee grounds to a large container or pitcher, and pour cold filtered water over them. Use a ratio of roughly 1:4 coffee to water, or adjust to your taste preferences.
2. Stir the coffee and water mixture gently to ensure all the grounds are saturated. Then, cover the container and let it steep in the refrigerator for at least 12-24 hours. This extended steeping time allows for a smoother and less acidic cold brew.
3. Once the cold brew is ready, it's time to transfer it to a keg. Make sure your keg is clean and sanitized before use. Using a funnel, carefully pour the cold brew into the keg, leaving some space at the top for pressurization.
4. Connect the liquid lines to the keg. One end of the line should be attached to the “out” post on the keg, while the other end will connect to the tap system. Ensure the connections are secure and leak-proof.
5. Install the keg in your kegerator, where it will be chilled to the ideal serving temperature. This will vary depending on personal preference, but a temperature range of 36-42°F (2-6°C) is generally recommended for nitro cold brew.
6. Next, attach the stout faucet to your pouring tower. The stout faucet is specifically designed for nitro beers and cold brew coffee, as it helps create the smooth and creamy mouthfeel associated with nitrogenation. Ensure the faucet is clean and properly installed.
7. Now it's time to set up the nitrogen regulator. Attach the regulator to your nitrogen tank, making sure the pressure valve is closed before doing so. Adjust the pressure to around 35-40 psi (pounds per square inch) for optimal nitrogenation.
8. Connect the nitrogen line to the “in” post on the keg. This line will introduce nitrogen into the keg, displacing the oxygen and infusing the cold brew with tiny nitrogen bubbles.
9. Open the pressure valve on the nitrogen tank to allow gas to flow into the keg. Monitor the pressure using the nitrogen regulator, adjusting as necessary to maintain the desired level.
10. Let the cold brew sit with the nitrogen flowing for at least 24-48 hours. This extended period allows for proper nitrogenation and carbonation, resulting in a smooth and velvety texture.
11. After the nitrogenation period, your nitro cold brew is ready to be enjoyed. Pour it through the stout faucet, holding the glass at a slight angle to create a cascading effect as the nitrogen bubbles rise to the surface. This visual presentation adds to the overall experience of drinking nitro cold brew.
12. Serve the nitro cold brew in a chilled glass for maximum enjoyment. The nitrogenation process enhances the flavors of the cold brew, bringing out the subtle nuances and creating a creamy mouthfeel.
Remember to clean and maintain your kegerator and tap system regularly to ensure the best quality nitro cold brew. Enjoy experimenting with different coffee beans and ratios to find your perfect nitro brew recipe. Cheers!