Black Hole
May contain traces of nut
There is a certain body heat required to warm the whisky+water from 0 deg.C, but you would have to ingest the ice to use up the large number of calories required to overcome the latent heat of crystallisation.
[By the way, in case anybody is mystified, the Watt is a unit of power, the calorie is a unit of energy, and energy = power x time (or power = energy / time). A quantity of some material (eg water) requires a constant amount of energy to raise its temperature by a constant amount - unless it changes phase (eg ice melting into water) which requires much more energy.]
[By the way, in case anybody is mystified, the Watt is a unit of power, the calorie is a unit of energy, and energy = power x time (or power = energy / time). A quantity of some material (eg water) requires a constant amount of energy to raise its temperature by a constant amount - unless it changes phase (eg ice melting into water) which requires much more energy.]