It's a thing of beauty to watch the bubbles cascade and coalesce in the glass. Take that first sip: cool, but not cold, the sharp roasted flavor is tamed by the velvety mouthfeel. People joke that it's not just for breakfast, but you probably wouldn't mind starting out every day with a thick, rich glassfull.
It's easy to see why nitro cold-brewed coffee is so popular: just like with deep roasty stouts, nitrogen reduces the bitterness and acidity, letting other flavors shine. The downside is the premium you'll pay at your local artisanal coffee shop or nearest Starbucks.
Fortunately, you don't necessarily have to drop a five-spot every time you want to enjoy a glass; you don't even need to leave your house. If you already have a normal CO2 keg setup, you can level up by adding nitrogen to the mix. That one-time cost will let you satisfy your cold brew craving and still be able to put your Guinness clone on tap once in a while, too.