Corn on the cob is a crowd favorite during the summer, and according to Oh Sweet Basil, four secrets will help you prepare it on the grill perfectly. The first step is to pull the husks back on the corn without removing them and strip away the silk strands. Next, fill a large pot with cold water and add a couple of tablespoons of salt to soak your corn in for about 10-15 minutes. With the grill set to medium, cook the corn, still in the husks, for about 15-20 minutes, turning every five minutes. Once tender, pull the corn off and rub butter on as desired. The final secret is to use a 3-to-1 ratio of salt to sugar mixture to sprinkle on your corn just before eating.