The Yeti Hopper 30 cooler ($350; yeticoolers.com) is an easy-to-haul, soft-sided cooler that's leakproof and keeps beer cold for days—an innovation we’re willing to pay for. For supercool beverages on a hot summer day, follow these steps:
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1) Put down a layer of beer.
2) Pour a one-or two-inch-thick layer of ice over top.
3) Sprinkle a handful or two of the secret ingredient—rock salt—over the ice.
4) Repeat, finishing with ice on top, since cold sinks. While the salt does melt some of the ice, it also lowers its freezing point, allowing the water to cool to well below 32˚.