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How To Make Spheres of Ice

Sphere Ice

Sphere Ice3In a recent article, I described the importance of ice in your cocktail, describing the different kinds of ice you may want to use depending on what you are drinking. If you have ever visited the Bradstreet Crafthouse or a handful of other fine destinations, you may have marveled at the drinks that feature incredible spheres of ice—smooth glacial planetoids that literally span the entire width of the glass. Much more than mere aesthetics, these arctic wonders are functional, keeping their cocktails cold while minimizing dilution. That’s because a sphere has the smallest possible surface area for a given volume. Less surface area means less melt, and that results in longer sip time without loss of flavor or temperature.

So how does a bar create a 3-inch sphere of ice? The only answer, up until a couple of years ago was that they carved it! The ice sphere trend started in Japan amidst a mini-craze of whisky drinking. Japanese bar-goers wanted to slowly sip and enjoy their spirits (or maybe they took frequent breaks at the karaoke microphone). It had long been known that large chunks of ice last longer, so eventually someone decided to push that concept to the limit. I like to imagine it was a bright, young college kid majoring in physics or maybe working on a thesis in thermo-dynamics. I picture him as an undiscovered sculptor or perhaps a descendant in a long line of Samurai sword makers.

Method One: Carving
Here’s an amazing video featuring one such artist carving away at a chunk of ice until his sphere is just right. You can do this at home. You really can—if you don’t mind losing a finger or two! Actually, I understand that the process simply involves chopping away at a cube to remove the eight corners, then chopping at each of the 24 corners that result, and so on until it’s relatively smooth. But I don’t recommend this method. I am certain that if I tried this, aside from slicing into my hand, my sphere would come out looking like an ice bean, or a Shmoo. Besides, is this any way to treat your knives? There is an alternative, and it’s a lot easier, but. . .

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Ice isn’t just cool, it’s important!

Ice Cube

icecube3It may sound silly to some people, but ice is probably the most important part of your drink. I know, you are probably thinking sure, ice makes your drink cold, but what’s the big deal? Well, until you understand the multiple roles ice plays in a cocktail you won’t see how important it really is.

What is ice?
It sounds like a stupid question because ice is obviously frozen water, but depending on how it is frozen and the quality of the water, ice will behave differently in your cocktail. In addition, the size and shape of the ice pieces can have a dramatic effect on the dilution rate, cooling efficiency, and the overall aesthetics of the drink.

Size matters
In any cocktail, you need to realize that the ice is going to shed water into the mixture, so the ice you select will affect the ability to cool the drink as well as how quickly it gets watered down. Here’s a quick rule of thumb: Small ice pieces (such as pea-sized crushed) cool quickly but melt more readily. Large ice pieces (cubes) cool the drink more slowly, but will not melt as fast.

To illustrate this more clearly, if we mixed two cocktails—one with cubes and another with crushed—the cubed ice will chill the drink slowly but the ice may remain intact longer. The crushed ice will chill the drink very quickly, but will dissolve much faster. Fortunately, we speed the cooling process dramatically by shaking or stirring, and since we don’t typically want a watered-down drink, we use larger ice cubes and plenty of them when we mix a cocktail.

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