Cold whiskey is good. Watered down whiskey is not. The Whiskey Wedge helps you achieve the former while avoiding the latter. The trick is in the special silicone mold. You simply pour water into the included double old fashioned glass, insert the mold, and freeze. Thanks to the ice's wedge shape, it melts far more slowly than a typical cube thanks to the limited surface area in contact with the drink, meaning your whiskey gets nice and chilled but keeps its integrity to the last drop.