Although an inert gas, nitrogen can still create a reaction—especially when it infuses a drink. Best known for giving Guinness stout its luscious viscosity and creamy head when served on tap, nitrogen aerates a beverage with tinier bubbles than those in carbonation without adding any of the bite. These qualities make it a natural addition to cold-brew coffee. Whether you steep it yourself or dilute a ready-made concentrate such as Grady’s, that morning cup tastes better from GrowlerWerks’ $219 uKeg Nitro cold-brew coffee maker—use it with tea and batched cocktails, too.
THE COMPETITION
