58K views · 241 reactions | You can learn a lot about ice by just looking at it: A pristinely clear cube tells you it’s made from pure water in a perfect crystal lattice. Cloudy ice signals impurities, adsorbed gases, and irregular crystals. What started as a passion project for test cook Joe Gitter turned into a scientific study on how to create the clearest ice for cocktails. Find out how. Buy our cocktail book, How to Cocktail: https://cooks.io/36iNOkz | America's Test Kitchen | Facebook