A family favorite, and an inspiration to use greens in many of our soups. For a soup with even more character, swap in mustard greens for half of the milder ones listed below.
Heat in a large soup pot over medium heat:
Add and cook, stirring, until tender but not browned, 6 to 8 minutes:
Stir in:
Bring to a boil, then reduce the heat and simmer until the potatoes are soft, about 20 minutes. Remove the pot from the heat. Using a potato masher, lightly mash the potatoes in the pot. Heat in a medium skillet over medium-high heat:
Add and cook, stirring, until browned:
Add to the pot. Discard any oil left in the skillet and pour 1 cup of the soup into the skillet. Scrape up the browned bits and return the liquid to the soup. Simmer for 5 minutes. Stir in:
Simmer 5 minutes more. Stir in: