Cook bacon until crisp; drain and crumble. Set aside. Tear off a 36x18 inch piece of heavy duty foil. Fold in half to make an 18-inch square. Fold up sides, using fist to form a pouch. Thinly sliced potatoes into pouch; add carrots and green onion. Sprinkle with salt and pepper; dot with butter and sprinkle with caraway.
Fold edges of foil to seal pouch securely, leaving space for expansion of steam. Grill over slow coals until done, 55 to 60 minutes; turn several times. Open package, stir in crumbled bacon and cheese. Close pouch, return to grill until cheese melts, about 1 minute. Serves 6.
