Cutty Sark Global Brand Controller Jason Craig said: "We spotted an opportunity for expansion through the US on-trade, where whisky chasers were becoming popular again thanks to TV programmes like Mad Men. "We therefore set about designing a premium edition Scotch whisky to fit this niche. We wanted it to be even smoother than Cutty Sark Blend and have a higher than normal alcohol content - 100% proof rather than the 80% proof of our major competitors. We found the answer in Prohibition Edition - an old-school, authentic Scotch, smooth on the tongue but with a big finish."