For stock

Combine all stock ingredients in a large stockpot, being sure everthings covered with broth, bring to a boil, lower heat and simmer 2 to 3 hours, with a cover ajar to allow for broth to reduce somewhat.

Strain stock through a fine strainer to a clean large bowl, discard solids.

At this point you need to degrease stock, the simple way is to chill overnight and just remove and discard top layer of fat, or you can skim it off with a ladle if you do not want to wait.

For soup

In a medium saucepan, melt a tablespoon butter, add mushrooms and soften add onions and garlic, carrots, celery, tomatoes with the juice from the can, thyme, pepper, hot sauce, broth and lemon juice, bring to a boil and simmer uncovered until vegetables are tender

Meanwhile bring your strained stock to a simmer in a large stockpot, add cooked vegetables and all liquid left with them and combine and simmer add bok choy, the cooked rice or pasta and cubed cooked meat, heat through, sprinkle with parmesan cheese and serve hot! Enjoy!