The drink contains malted barley, wheat and oats, which could pose a risk to consumers with an allergy or intolerance.
The recalled products are the 330ml cans and 330ml bottles and new labels are being sent to pubs with keg products with the amended ingredients list.
This applies to all products with best before dates up to and including 4 December 2019.
The Hackney-based brewery said that the brew was otherwise safe to drink in a blog on its website.
It said: “We are voluntarily recalling a limited number of London Fields Brewery Hackney Hopster cans and bottles as it contains wheat and oats, which are not declared on the product labels.
“This means that those products are a possible health risk to anyone with an allergy to wheat or oats.
“However, they are otherwise perfectly safe to drink.”
Keg product
Sites with keg product should tell customers about the allergens, the brewery said.
“Keg product sold in the on-trade (pubs and bars) is also incorrectly labelled.
“We have informed customers to advise consumers at the point of purchase that the product contains malted barley, wheat and oats, and new labels are being made available.
“This will prevent any need to recall keg product.”
This is the only London Fields Brewery product known to be affected.
