Britons know very little about our national drink, cask beer, new research has shown.

50% don't know barley is one of main ingredients of cask ale

As National Cask Week gets underway, research from Greene King shows two-thirds of people have no idea that cask beer is a fresh, natural product and one in ten think it is a type of lager.

Only half of those polled know that cask beer is only available in pubs. A total of 50% don't know that barley is one of cask beer's main ingredients, although 75% do know it contains hops.

See full article on the Morning Advertiser website.