You have probably heard about the angels' share, whereby a certain amount of whisky is lost each year due to evaporation (casks are not air-tight vessels of course, they breath and it's a good job they do as it's key for maturation). The amount lost each year in Scotland is 'only' around 2% (still amounting to over 160 million bottles!), whereas in India (where the temperatures reach 40 degrees Celsius in the summer) the rate of evaporation is 10-16%(!)
It is because of India's 'greedy angels' that Amrut rarely age their single malt whiskies for longer than 4 years. This release however, was aged for 8 whole years. Almost 274 litres of spirit were lost in this experiment but what remains is really rather good indeed...