For 50 years Maris Otter barley has been used by brewers to make award-winning barley. Most cereals are superseded within 5 or 6 years so this is quite a record. The original barley is grown in North Norfolk and owned by grain merchants, H Banham. They own a secret 'motherfield' where the pure seeds are kept and used to sow other fields around the county.
Even though Maris Otter makes up less than 6% of the brewing malt market in the UK, 10 of the most recent 15 champion beers of Britain were brewed with Maris Otter malted barley.
In celebration of the 50th anniversary there is a beer festival at Open in Norwich on 18th and 19th September.
Click below to watch a report by ITV News Anglia's Kate Prout.