Certain things just taste like summer, and corn on the cob is one of them. Popular kitchen wisdom used to dictate that the way to cook corn on the cob was to set a large pot of water to boil, run out to the garden, pick the corn, shuck it on the way into the house, and plunge it, post haste, into the boiling water. But now with the sweeter varieties of corn readily available at farmers’ markets and grocers, a subtle smokiness from the grill adds just the right flavor.