Rut roh! This machine is currently broken, but we hope to have Nitro Brew available again by Spring of 2021. Nitro Brew is cold-brew coffee infused with nitrogen gas is released through a pressurized valve with tiny holes. As high pressure forces the cold brew past a disc, it creates a creamy, stout-like effect. The whole cascading of the coffee is just beautiful, really. Black coffee die-hards. If you don’t care about it being iced cold—and don’t put milk in it—you’ll probably love it.