I pretty much follow the recipe except that I used only 1 Qt. of chicken broth and 4 carrots, didn't use cheese and smoke sausage. I think because of all these changes, my soup tasted like it was missing something. So I added about a tablespoon of soy sauce. (I was tempted to add fish sauce but was afraid that it would take over the soup....)
The soup came out perfect - light and hearty at the same time. (Is that possible?) I guest it's because the lack of meat in the dish.