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) then pumped into a 5,000-litre Indian-made semi-conical wash still, where it undergoes slow distillation for 14 hours. Surinder Kumar, the master blender at Amrut Distilleries, says that this allows for "more reflux, more contact time with the copper". The spirit is then distilled again in Scottish-style, but Indian-made, 5,000-litre copper spirit still with a boil ball. This produces spirit between 68% and 70% abv. If the spirit is diluted to 62.8%, each distillation run makes enough to fill 20 barrels. The whisky is aged in a mix of new oak and used Bourbon barrels imported from the United States. The