These days your rocks could be made from ice that was hand cut from a purified block of Icelandic spring runoff or crafted by purified filtration. But in all likelihood the ice you put in your cocktail was an afterthought pulled from the depths of a plastic bucket or freezer bin. But really, ice is the cornerstone of the perfect cocktail.
For those without Icelandic connections, ice has taken a turn for the better with Spirit Ice Vice, a wonderful gadget that makes your water rock solid round. Spirit Ice Vice provides you with a mold that once frozen is placed under a several pound slab of metal that, using the laws of gravity and thermal conductivity, creates a perfectly round ball of ice. Maximum cold for minimum surface area means that less water will melt into your single malt. Consider your ice cube evolved.
It can be yours today for $750.