The beer, called Double Summer, is a pale ale with an ABV of 4% (cask) and 4.4% (keg), brewed with Neson Sauvin and Jester hops.
It will sit alongside Fuller’s ‘craft’ range, which includes Frontier lager and Montana Red.
Stu McKinlay, director at Yeastie Boys, said: “Both myself and my co-founder [Sam Possenniskie] have always been huge fans of Fuller’s beers and grew up drinking the classics.
“To finally get to meet our brewing heroes and then to discover they were lovely people who are still very much involved at the forefront of British brewing, has surprised and delighted us.”
Yeastie Boys, whose beers include Pot Kettle Black porter, Gunnamatta IPA, Digital IPA and Divine Hammer amber ale, brewed the beer with Fuller’s at the company’s Griffin Brewery in Chiswick.
McKinlay added: “For us, this was the equivalent of a band sharing the stage with their most influential heroes. And, one step better, actually liking them too.”
The Morning Advertiser understands further collaborations could arise in future.
Fuller’s recently launched new food and chef-based marketing campaign Fuller’s Kitchen as part of an ongoing focus on developing the company’s food offer.
Chief executive Simon Emeny previously said he wanted to make the company “as famous for its food as it is for its beer”.
Fuller’s head of food Paul Dickinson took to the stage at The MA’s recent Skills Summit to discuss the ongoing chef shortage and the group’s approach to chef training and development.