Edinburgh-based brewing company, Innis & Gunn, has followed wine and spirit producers by releasing the first oak-influenced beer. Although historically beers have always been stored and matured in oak, Innis & Gunn Oak Aged Beer is the first that uses oak deliberately to influence its taste. Developed by the company's managing director, Dougal Sharp, the project has been undertaken in conjunction with whisky distillers William Grant & Sons, who use the barrels after the beer has been matured for Grant's Ale Cask Reserve. The beer goes through a 77-day maturation process which includes 30 days in lightly toasted American white oak barrels. The 6.6% ABV beer is available in a number of supermarket chains from late August, with an RRP of 1.70.