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
Amrut (whisky) distillery initially tried importing staves to save money, but abandoned the practice due to the smell of the barrels. It has also used its own rum and brandy barrels to finish its single malts. The Amrut Intermediate Sherry variant is aged in Sherry casks from Spain and Portugal. Amrut Distilleries has a cooperage on site to handle repairs. The duration of barrel-ageing for Amrut single malt whisky is much lower than that of Scotch whisky, due to India's hotter climate. The hot weather makes whisky mature faster in India than it does in Europe or the United States. Surinder Kumar,