The 6% black India Pale Ale features “mellow cappuccino notes” and was first brewed more than three years ago.

Chiara Nesbitt, beer buying manager at Tesco, explained: “I discovered St Austell Proper Black on a recent visit to Cornwall. It’s an absolute gem of a beer that instantly caught my attention – as soon as I tried it I just knew we had to add it to the Tesco range.

“This is one of the best aspects of my job, being able to discover these little nuggets that are so different and exciting for our customers.”

Roger Ryman, head Brewer and brewing director at St Austell Brewery added: “We are delighted that Tesco has decided to exclusively list this beer for its stores as it is an unusual one for beer lovers.

“A Black IPA is one that stimulates debate, as it is a fusion of two beers that some people don’t think should be mixed. Its origin comes from American craft beer makers, who are synonymous with combining beer styles.

“I was inspired to try and brew my own when doing a beer tasting session at a bar in London, as it wasn’t something we had tried before at St Austell.”