UPDATED after comments from our readers. Short answer: who knows how the hell Brewdog are carbonating their beers.
Every day, between five and ten unique visitors find our blog with the search term ‘do brewdog use Co2’. No kidding.
Because it pains us to imagine their disappointed little faces when they discover that we don’t actually answer that question anywhere, we decided it was time we did.
We take it that the question is really (a) “Do Brewdog artificially carbonate their beer?” or (b) “Are Brewdog’s beers ‘real ale’?”
To which the answers are (a)
yes sort of, maybe and (b) no hardly any.
It seems most of Brewdog’s beers are carbonated in closed fermentors; have most of their yeast filtered out; and are then ‘topped up’ with CO2 to get to the right level of carbonation.
All of Brewdog’s beers are carbonated using carbon dioxide injected into the beer.
They made a fuss about ceasing production of cask
do not currently produce any ‘real ale’ — that is beer which is conditioned (carbonated) ‘naturally’ in the bottle or cask by yeast remaining in the beer — but do produce a very small number of limited edition beers which are conditioned naturally in the bottle. Those are technically ‘real ales’, we guess, though they wouldn’t like to label them as such… Does that make their beer better or worse? Does the use of some added CO2 make their beer worse? Can. Of. Worms.
We also get occasional visitors trying to find out if John Smith’s smooth is real ale: it isn’t, but John Smith’s Cask (rarely seen) is.