Add two cups of water into the slow cooker. Turn it on high and add the cube of beef bouillon. While that's cooking, cook the sausages and bacon in a frying pan just enough so they're browned (not fully cooked). Drain the sausages and bacon on paper towels to remove excess fat. Cut the bacon and sausages into 1-inch bite size pieces (you could do this before browning if you'd like). Peel the potatoes and cut into chunks (1-1.5" each). Chop parsley and onions. Once the beef bouillon cube has dissolved, add coarse black pepper (from a pepper mill ideally) and a little salt, then turn the slow cooker to medium and add all ingredients, stirring to make sure the soup base seasons everything and the ingredients are mixed up. (The soup/gravy will increase as the meat starts to cook). Cook for 4 hours on medium then change to "keep warm" until ready to serve. We serve ours over rice but this can also be served with bread.