Prepare 25-30 coals for the campfire.
Lightly oil a 12-inch Camp Dutch Oven and the inside of the lid.
Layer the sliced potatoes in a shingle pattern on the bottom of the Dutch Oven. Sprinkle the potatoes with about 2 teaspoons fresh ground pepper.
Cook the bacon in a skillet until crisp. Drain on a paper towel lined plate and set aside. Lightly brown the sausages in the bacon fat but do not fully cook. Set aside.
Remove all but about 3 tablespoons of the bacon fat and discard. Add the sliced onions to the hot skillet and cook covered for 5-7 minutes stirring once or twice. Remove the lid and add the chicken broth, vinegar and season with black pepper. Bring the onions and broth to a boil. Remove from the heat and carefully pour the onions and broth over the potatoes in the dutch oven.
Top the onions and potatoes with half the crumbled bacon and half the chopped parsley. Place the browned sausages on top and cover with the lid.
Place the Dutch Oven over 8 hot coals spread out in a checkerboard pattern. Place 16 hot coals on the lid.
Cook the coddle for about an hour, turning the pot ¼ turn clockwise, and the lid ¼ turn in the opposite direction every 15-20 minutes to prevent hot spots. Check the casserole to make sure it does not dry out and burn. After an hour add 1 cup or more of your favorite beer to the pot. Continue cooking until the sausages are fully cooked and golden brown - about 45-60 minutes. Continue turning the pot and lid as described above and add new hot coals as needed. You may need to sweep the ashes off the top of the dutch oven before adding new coals.
Take care when removing the lid to avoid getting ashes in the food. Garnish with the remaining parsley and bacon.
Serve and enjoy with a loaf of crusty bread to soak up the broth.