deltaH Innovation

deltaH Innovation lines up Brains Brewery to launch self-cooling can

Welsh start-up deltaH Innovation is commercialising Cool>Can, a self-cooling drinks can that uses a chemical process housed in a can-within-a-can format to cut beverage temperature by about 10-15C on activation. Brains Brewery will launch the first product, Bayside Welsh Lager in Cool>Can format, at London Packaging Week 2026, while deltaH reports interest from the US and Japan but intends to keep manufacturing in South Wales.

Why this mattersA working self-cooling can that fits existing filling lines could open a new premium-format category for canned beverages if it scales beyond a single regional launch.

• Brains' Bayside Welsh Lager will be the first beer using deltaH's Cool>Can self-cooling technology.
• The launch is scheduled for London Packaging Week 2026.
• Cool>Can uses a non-toxic chemical process in a can-within-a-can format, cutting drink temperature by approximately 10-15C on activation.
• deltaH has developed the technology for more than two years and runs a pilot production facility in Wales.
• deltaH reports interest from overseas markets including the United States and Japan but plans to keep manufacturing based in South Wales.
• The company is backed by a syndicate of Welsh investors as it moves toward commercial-scale production.

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