In a pan/casserole or another vessel large enough to hold the corn, dissolve salt in about 2 cups of hot water. Add the remainder of the water, stir. Add the corn. Weight with something to hold the corn under the water. Brine for at least 30 minutes and up to 8 hours.

Prepare grill for direct cooking over medium heat. Preheat for five minutes if using charcoal, 15 if using gas. When ready to cook, oil grate and place corn on grill (cover grill if using gas) and cook, turning every two to three minutes for a total of about 10 minutes until corn is tender and lightly charred.

Remove to serving platter and immediately brush or coat with butter