Paul John (whisky) evaporation during aging, known as the angels' share, is also higher in India, at 10–12% per year, than in Scotland, where the annual evaporative loss is about 2%. This leaves a hogshead with only 150 bottles left in it, after three years, compared to around 350 in a Scotland. Michael John describes it this way, "Whisky matured at these temperatures simply cannot be aged for the kind of time expected with Scotch, even trying to mature our whisky for just 10 years would leave barely a bottle of liquid in the barrel. Fortunately, the heat actually speeds up the maturation
The Whisky Barrel whiskies aimed at investors. The Scotch Whisky Regulations 2009, intended to provide Scotch whisky producers and retailers protection from foreign imitations, came into force on 23 November 2009 and apply to all home nations of the United Kingdom. The regulations apply to production, labelling, advertising and packaging of Scotch whisky. As a direct result The Whisky Barrel company cannot transfer or bottle oak casks of maturing Scotch whisky outside Scotland from 22 November 2012; all single malt Scotch whisky can only leave the country for retail purposes if it is contained within a bottle clearly stating its contents and source.