Fire up your grill for direct and indirect cooking.
Grill the sausage then cut into rounds.
Toss the potatoes with just a splash of oil and grill (I use a grill basket) until just starting to get soft. Remove.
Also place the corn onto the grill. Rotating often, cook until starting to char.
In a large deep disposable aluminum pan combine all ingredients.
Place back onto the grill over indirect heat and let cook another 30 minutes-1 hour or until the potatoes are completely done and the onions are softened. You don't want the broth to boil, but a light simmer is ok.
Serve hot with plenty of the broth from the bottom of the pan.