If you’ve spent any time in fancy cocktail bars, you’ve probably noticed that many of them serve drinks with a single, huge sphere of ice. Why do they do this? Well, mostly because it looks really cool, but it also dilutes your drink more slowly, which is important when it costs $14 plus tip.

Luckily, you can make these ice balls at home yourself, and a set of two molds that will last for years costs less than a Old Fashioned at your neighborhood bar. [Tovolo Sphere Ice Mold 2-Pack, $9]

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