Anything from the grind size in our cafes or the exact amount of time we steep our cold brew–and even the decision to steep versus other methods–are all the product of rigorous trial and error.

This process was manifest in our transition from cold brew cans to nitro cans. Because nitro is made almost identically to Guinness, that nitrogen content necessitated us learning how to can with the widget in the bottom. The widget is a plastic device that stores additional nitrogen gas until the tab is popped and ultimately helps give Nitro that vicious head of foam and the creamy texture and cascade. While it’s awesome to slurp right from the can, give it a very hard pour into a glass and be entranced by the cacophony of textures and the fireworks of bubbles.

12 ounce cans