The earliest Scottish distillers used pebbles from the cold mountain streams of Scotland to cool down their whiskey. Folklore is that the term 'whiskey on the rocks' was born from that ancient practice. Then along came ice cubes, and with ice cubes replacing rocks, the true enjoyment of drinking whiskey was lost. The perfect solution which allows you to enjoy whiskey as it is meant to be enjoyed is now here! Your whiskey will be cooled just enough, whatever dilution you have chosen will remain constant, and the taste of the last sip will be identical to the taste of the first sip.