The endothermic gas reaction takes place in two steps or stages. In the first stage, some of the methane. burns with air creating an exothermic (heat generating) reaction. In the second stage, the surplus methane. reacts with the carbon dioxide and water vapor produced in the first stage. This second stage is endothermic. (heat absorbing).
Pat the chicken drumsticks dry with clean paper towels. Cover them with plastic wrap or aluminum foil to warm them up to room temperature for 30 minutes. Preheat a gas or charcoal grill to 400 degrees F. If you are using a charcoal grill without a temperature gauge, this will take about 20 minutes.
Close the grill and cook for about 15â20 minutes, turning every 5 minutes or so. Check the corn ready when the husks start to get kernel-shaped char marks and pull away from the tip. If the kernels don't feel tender when poked with a fork, it's fine to leave the corn on until the husk chars black.