When I make meatballs I usually make big batches and freeze, any I don't use. So I try to keep them on hand. If you don't have any or just have store bought that's fine. The same with the mushroom broth store bought will due just fine also. The star of this soup is fiber. This for those who need some tasty fiber in there diet.
Pirates in days of old would spend their gold dablooms, and when something cost less they cut the coins into eighths. Thus the term pieces of eight. So when you love to eat protein it's like a treasure to come across pieces of eights.