(Courtesy Almanac Beer Co.)

In an industry built on water, grain, and hops, carbon dioxide doesn’t always get top billing—but maybe it should.

CO₂ is the quiet workhorse of beer. It gives a pint its fizz, sharpens the flavor, and creates that familiar foamy head. Behind the scenes, brewers also rely on it to keep oxygen out of tanks and bottles, preventing that dreaded stale, cardboard-like taste.

Now, one California company is rethinking where that crucial ingredient comes from.

In a first for commercial brewing, Aircapture has partnered with Almanac Beer Co. to create a beer carbonated with CO₂ pulled directly from the atmosphere. Instead of relying on traditional industrial sources—most of which are tied to fossil fuel processes—the system captures carbon dioxide from ambient air and refines it to beverage-grade quality right on site.

The setup is surprisingly compact. Installed inside Almanac’s brewery in Alameda, the unit pulls in air, extracts CO₂, purifies it, and feeds it straight into the brewing process. No tank deliveries, no middlemen—just a closed-loop system turning air into an ingredient.

The launch follows a turbulent period for U.S. brewers

Brewers got a wake-up call in 2022, when a nationwide CO₂ shortage disrupted production and sent prices climbing. Because most commercial CO₂ is a byproduct of industries like ammonia and ethanol production, supply can tighten quickly when those sectors slow down. Breweries, which depend on a steady flow of gas, were among the hardest hit.

Headquartered in Berkeley, CA., Aircapture’s approach sidesteps that vulnerability. By producing CO₂ on site, breweries can reduce their exposure to supply chain disruptions and price swings, while gaining more control over a key part of the process. The company says its system delivers CO₂ at 99.999% purity—well above typical brewing standards.

Just as important, it’s fast to deploy. While many direct air capture projects take years and massive investment, this modular system was installed at Almanac in a matter of weeks, without requiring new construction or halting production.

For Almanac, it’s both a technical upgrade and a philosophical shift.

Brewing has always balanced science and craft, and this leans heavily into the science side—transforming carbon from a commodity into something the brewery can produce and reuse on its own terms.

The result is Almanac Flow – Clean Air Edition, a 5.5% West Coast-style pale ale that made its debut at the brewery on March 21. Visitors got a look at the system in action, watching as captured CO₂ moved from air to glass.

The beer is now available at Almanac’s Alameda taproom and has rolled out to more than 800 retail locations across California, including major chains like Safeway, Whole Foods, Total Wine, and BevMo.

Yes, it’s a small shift in sourcing one ingredient—but for an industry that depends on consistency, it could signal a much bigger change for U.S. brewers.

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