The company, which operates pubs across its native county, will release three new beers – Gold Bier (4% ABV), Malt Brown (4.8% ABV) and Black Stour (4.8% ABV) – as part of a wider rebrand.
Harvey’s spokesman Bob Trimm said: “We wanted to make a range of new brews that people wouldn’t necessarily expect to see from Harvey’s but that still maintained our reputation for producing quality beers."
The brewery used to produce Sussex Keg Bitter, but stopped production back in 2000 after a flood damaged kegging equipment.
Trimm added: “As a company with a 226-year history, we’ve always kept evolving while ensuring we maintained our integrity and passion for producing world-beating beers.”
The beers will feature bespoke label designs by Sussex artist Susan Lynch on their keg lenses and beer cans when they are released later this year.
Scottish brewer BrewDog earlier this year announced the launch of its first 'real ale', a new, key-keg-produced interpretation of its popular Dead Pony Club ale, five years after the company infamously snubbed the Great British Beer Festival for its lack of cask-conditioned ales and focus on keg beers.
The brewer previously abstained from creating cask ales in the past, claiming it was too difficult to ensure the quality of cask beers across its estate and to free-of-tie operators.