Brewdog Punk IPA 330ml x 24

In 2009, James Watt and Martin Dickie published the full Punk IPA recipe in their open-source DIY Dog catalogue — a radical transparency move no major craft brewery had attempted at scale, and one that anchored the beer's anti-establishment identity to a verifiable technical fact.

Brewed at the Balmacassie site in Ellon, Aberdeenshire, where local Scottish water feeds a 300-hectolitre brewhouse, the beer draws its backbone from a Maris Otter Extra Pale malt base mashed at approximately 65°C — a temperature that preserves fermentable sugars while keeping body lean enough to let the hop architecture dominate.

The hop bill is the engine: Chinook, Ahtanum, Cascade, Simcoe, Amarillo, and Nelson Sauvin — sourced from Yakima Valley and New Zealand — are added at 60-minute, 30-minute, 15-minute, and flameout intervals, then a dry-hop charge is applied post-fermentation at 14°C for five days, locking in volatile tropical and resinous aromatics that a hot-side addition alone cannot preserve.

At 5.6% ABV and 35–40 IBU, Punk IPA sits in a deliberate no-man's-land: too bitter and New World-hopped to be a British session ale, too restrained in ABV to be a US-style double IPA. That calculated middle ground — aggressive aroma, drinkable strength — is precisely what made it the template for an entire generation of UK craft IPAs.