Add the butter and oil to a medium-size soup pot.
As the butter melts and incorporates with the olive oil, begin chopping the potato and all the vegetables into bite-sized pieces. Set aside.
Slice the spicy pepper(s) and remove the seeds and membrane if you want less spice. Set aside.
Peel the ginger and mince. Set aside.
Give all the edible herbs you are planning on using a rough chop. If any of them have tough stems, remove the stems first before chopping the herbs.
Once the butter has melted, add in the potatoes and stir well to coat with the butter-olive oil mixture.
Next, add in all the vegetables, spicy pepper(s), and ginger and stir well to coat.
If using salad greens, mushrooms, or both, add them at this time and stir well to coat.
Now, add in all the edible herbs you are using and once again stir everything very well to coat.
Pour the bone broth and the water into the soup pot, mix well, and bring up to a boil. When the soup comes up to a boil, immediately turn it down to a medium simmer and cover the soup pot.
After 10 minutes, check on the soup. If the potatoes and other vegetables are tender, the soup is ready.
Taste the soup and season with sea salt and freshly ground black pepper if desired.
Ladle the soup into serving bowls. You can top it with some hard-grated cheese if you want, such as a Pecorino Romano or Parmigiano-Reggiano.
You can store this soup well-wrapped in the refrigerator for 2 to 3 days or frozen in a freezer-proof container for 2 to 3 months.