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From Lifehacker: "If you want to cook corn for the masses, Bon Appetit suggests a dead simple, ingenious method: "cooler corn." Basically, fill a large, clean cooler with loads of corn on the cob and pour two kettles-full of boiling water over the corn, then close the top. 30 minutes later, your corn will be perfectly cooked."
This makes corn for a party .... Cooler Corn!! Clean igloo cooler, add shucked corn and 2 kettles of boiling water. 30 mintutes later perfect corn!... remains perfect for hours!!