If you’re in a cold area, you can distill liquids without even needing fire! This process is called “freeze distillation,” and it’s really simple: you just leave your mixture of liquids out in the cold until it begins to freeze. The liquids that freeze first have the highest freezing points, and by removing their ice as it forms, you concentrate everything else in what’s left.* Both regular and freeze distillation will separate saltwater into drinkable fresh water (which is good for staying alive) and salt (which is good for both flavoring and conserving foods: see Section 10.2.6). They’re
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