I used a cast iron kettle, but if you are doing this stove top, use a large dutch oven
Cook the sausage, with the casings removed, just like you would ground beef
Leave the fat from the sausage in the pot, and add the onion, carrots, celery, and garlic
Cook over medium/high heat for about 10 minutes, or until vegetables are tender
Add remaining ingredients, bring to a boil, reduce heat to a simmer
Place lid on soup, and simmer for about an hour
When soup is just about finished, cook your ditali pasta according to the package instructions
Drain pasta, and add to the soup
Serve with grated Parmesan Cheese!