Do you fancy yourself a mixologist? Whether you whip up cocktails for a living or simply make them at home for admiring family and friends, one of the key elements to those drinks is one of the simplest: ice. And what kind of ice is the best? Perfectly clear, impurity-free ice— but how to get it? As Cocktail Chemistry reveals in this video from Rumble, it’s all about something called “directional freezing.” Watch and learn.