The prize for this award is a trip to Dublin in May for Hennessy and his partner Sue Burnett, which will include attending a VIP hosting at the Guinness Brewery and going to the Bushmill's Distillery.
He said the bar having the best Guinness was something Hennessy's had known for a long time, and was something told to them regularly by customers - particularly customers from the United Kingdom.
Hennessy said there were three reasons why he had always said they had great Guinness.