Members of the English Mustard Growers co-operative joined in celebrations for the bicentenary of Colman’s Mustard at The George in Stamford.
Farmers from south Lincolnshire were among 18 growers who gathered for the event, partly supported by Elsoms Seeds.
Guests were joined by NFU president Meurig Raymond.
English Mustard Growers, whose members include Lutton farmer David Hoyles, was formed in 2009.
Members produce around 1,300 tonnes of mustard seed each year for the factory.
Growers work closely with Unilever, which has strong environmental standards, as well as agronomists and the British Bee Keepers’ Association to ensure a steady supply of pollen and nectar for both wild and hive bees on their farms.
Mustard crops also help to improve soil structure and helps with weed control.