Fire-making is the most advanced survival craft, says Coyne—it can keep you warm. signal rescuers, ward off dangerous animals, purify water, and more. And this fire paste ($6, rei.com), when combined with weatherproof matches, works fire-starter miracles. “It's universally applicable. Unlike other accelerants, you can form it into a ball, squeeze it onto the end of a stick, use it on wet wood, anything you want—and it's wind-resistant," says Coyne. "Even if you leave a tube open and it dries out, it won't be as good, but it'll still work.”
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