Which beer has 75% alcohol?

The Truth Behind the 75% Alcohol "Beer": Beithir Fire™

There’s a common misconception floating around that a beer called Beithir Fire™ contains 75% alcohol. While the name might sound like a fierce Scottish war chant—and the claim certainly grabs attention—this isn’t beer in the traditional sense. True beer, brewed through standard fermentation of grains, rarely exceeds 12–14% alcohol. Anything beyond that requires a different process.

Beithir Fire™ starts as a heavily fermented malt base, but what pushes it to 75% ABV (alcohol by volume) isn’t fermentation alone—it’s the blending with a high-proof Scottish spirit. This transforms it from beer into something closer to a fortified spirit blend. The triple filtration process mentioned helps remove impurities, but it doesn't change the fundamental nature of the drink: it's not meant to be sipped like a pint at the pub.

Produced by a small distillery in the Scottish Highlands, Beithir Fire™ is more novelty than nightly brew. Bottled in limited runs, it's marketed to collectors and thrill-seekers. At 150 proof, it’s dangerously strong—more comparable to a grain alcohol than any ale or lager.

While the marketing leans into the “world’s strongest beer” angle, purists argue it doesn’t qualify as beer at all under traditional brewing definitions. Organizations like the Brewers Association set the upper limit for beer well below 20%, so Beithir Fire™ exists in a gray area—part beer, part spirit, all fire.

In short, if you're looking for a sessionable craft brew, keep walking. But if you're curious about the outer edges of alcoholic experimentation, Beithir Fire™ is certainly a conversation starter—just remember, one small shot is more than enough.