For Mushroom Barley Soup, omit the beef. Begin by heating the butter or oil over medium heat. Add the mushrooms and shallot and proceed as directed.
Season:
with:
Heat in a soup pot or Dutch oven over medium-high heat:
Brown the beef on all sides in batches without crowding the pot. Transfer to a plate and set aside. Reduce the heat to medium, pour off any drippings, and add:
Add:
Cook, stirring often, until the mushrooms are wilted, about 10 minutes. Add:
Reduce the heat to low and scrape any browned bits off the bottom of the pot. Return the beef to the pot, along with:
Bring to a boil, then reduce the heat, cover, and simmer until the barley is tender, about 1 hour. Taste and add salt if needed. Serve garnished with: