the steel fermentation kettle.In the last two years, the price of barley has doubled to ??200 (US$271) from ??102 per ton as farmers plant more crops such as rapeseed and corn that can be turned into ethanol or bio-diesel, a fuel made from vegetable oil.As a result, the price for the key ingredient in beer - barley malt, or barley that has been allowed to germinate - has soared by more than 40 per