Place pancetta and olive oil in 6- or 8-quart soup pot. Brown the pancetta. Add onion and garlic and cook until onion is translucent.
Add carrots, celery, and mushrooms and cook until mushrooms begin to brown.
Add rice, broth concentrate, water, parsley, basil and Worcestershire. Bring to a boil. Reduce heat to low and cook until rice is tender, about 45 min.
Nutrition calculation is an estimation only. If you need nutritional calculations for medical reasons, please use a source that you trust.