Held as part of a charity beer festival at the Bottle Inn in the village of Marshwood near Crewkerne, the event attracts entrants from around the world.
As the competition's fame has spread, nettle eaters from as far as New York, Australia, Northern Ireland and Belgium make the trip to West Dorset.
As the huge bunches of stinging nettles arrive, the competitors face one hour of munching their way through the leaves, and the winner is whoever finishes with the most two foot stalks, stripped of their leaves.
Only nettles provided by the organisers can be eaten, competitors are not allowed to bring their own, no mouth numbing substances are permitted - although a swig of beer in between mouthfuls is always encouraged.