McMullen & Sons, the Hertfordshire brewer, announced that its next Special Reserve limited edition ales would be Harvest Moon, which it first brewed in 1994.

The brewer has produced the beer in time for this week's Camra Peterborough Beer Festival, the UK's second biggest beer festival, and Real Beer Week, which begins on 30 September.

Fergus McMullen, McMullen's production director, said: "We want to introduce more people to the delights of real beer, its quality, its uniqueness of flavours and its health values. Harvest Moon, together with our mainstream cask ales, Country Best Bitter and AK Cask Conditioned Bitter, will have a very important part to play during Real Beer week."

Harvest Moon will be available in selected McMullen pubs and free trade outlets until 7 October.