It is important to note that this soup is meant to be adapted to your weekly farmers market haul. Feel free to substitute vegetables according to what is available each week. Turnips, potatoes, canned tomatoes are all great substitutions. The more you make this soup, the more familiar you will become with flavors you like best.
*Parmesan rind is the end of a piece of Parmesan cheese when bought whole. It is worthwhile to buy a wedge of Parmesan just for this soup. Grate the cheese to serve on the side and put the rind into the broth to simmer.
**Beans cook best with less salt. Season the soup generously with salt after the beans are cooked through.