How to Make It
Light a grill or heat a grill pan. In a food processor, combine the chile, scallions, onion, garlic, thyme, allspice and salt and puree until smooth. Whisk 1/2 cup of this fresh jerk sauce into the mayonnaise; reserve the rest for another use.
Grill the corn over moderate heat until lightly charred, 12 to 15 minutes. Spread the jerk mayo all over the corn; transfer to a platter. Shower the corn with the coconut and serve with lime wedges.