About Bottle-Conditioned Ales

These beers ferment in the bottle, just as real ale ferments in the cask at the pub. An obvious characteristic of real ale in a bottle is that it contains a sediment. This sediment is largely comprised of yeast and natural proteins and is certainly not harmful.

This yeast is what ensures that the beer continues to ferment and mature in the bottle. Bottle-conditioned beers are best protected from bright light and stored upright in a cool environment.

Fullers 1845 shown here is an excellent example.