Put the two halves together and Wrap grapefruit in heavy foil.
Put the grapefruit into the hot coals of the campfire
Cook for 5-10 minutes, or until the grapefruit is golden
Remove, unwrap, and enjoy!
Notes
If you're just coming in from the cold, you can also make this fun & tasty treat indoors. Follow the instructions but instead of using the campfire, use your oven's "broiler" to brown the top of the grapefruit.