"Doom Bar bitter" (4.0 abv), the brewery's flagship ale, accounts for nearly 90% of sales. Over of "Doom Bar" was produced in 2010. It was the highest selling cask ale in the UK in 2019. The beer is named after the dangerous Doom Bar sandbank at the mouth of the Camel Estuary in north Cornwall. Cask Doom Bar is brewed at Rock, but bottled Doom Bar has been produced, away, in Burton upon Trent, Staffordshire, since 2013. This ale can now be found across the UK as well as in Italy, Sweden and Japan.