Soak corn in a large bowl of cold water for 30 minutes.
Spray or brush lightly with vegetable oil.
Place corn in grill. For indirect heat, place corn on a plate setter or pizza stone. For direct heat, place corn directly on grill. Direct heat will make for darker, crispier grill marks, but either way is good. We somewhat prefer the indirect heat method.
Grill, turning corn every few minutes for 15-20 minutes until it has good grill marks and looks done.
Remove from grill, serve, salt to taste.
Recipe by Fit and Fed at http://fitandfed.net/2013/10/15/grilled-corn-big-green-egg/