Chop all ingredients to the size you prefer... diced, sliced, big chunks...
Throw it all in a crock pot and let it do it's thing.
Or throw it in a soup pot and simmer for 2 hours or so.
This was a small batch for a small crock pot. It made 2 large bowls of soup for a hungry couple.
Take the soup further...
We're a couple of mushroom fans. We grow mushrooms. We cook mushrooms. We create mushroom snacks. We forage mushrooms. We sell mushrooms to chefs. We sell mushrooms to the public. We study mushrooms. Amateur mycologists.