Set the grill to 350 degrees and use indirect heat. For gas grills, turn off the burners immediately under the sweet potato.
Prepare the Sweet Potatoes for the Grill
Cut a piece of aluminum foil large enough to wrap around the sweet potato
Spray with a little bit of olive oil to help the skin become crispy
Sprinkle a pinch of sea salt
Use a fork to poke a few holes through the skin. Wrap the sweet potato tightly with the foil.
Grill the Baked Sweet Potatoes
Place the foil wrapped potato on the grill
Grill on indirect heat for approximatley 40 minutes. The sweet potatoes should be fork-tender. Larger potatoes will need additional time.
Depending on the size of your sweet potato and the temperature of your grill, the sweet potatoes may take a bit longer. Ours take about 40 minutes but we are using a ceramic grill (the Big Green Egg) where the air circulates around evenly. I know some people may have to grill these upwards of one hour. Test on your grill and see how it goes.