½poundcremini or baby bella mushrooms(thinly sliced)
½poundwhite mushrooms(thinly sliced)
1cuppearl barley
8cupsvegetable stock
½tsp.dry or 1 tsp. fresh thyme leaves
2Tbsp.white wine or red wine vinegar
Instructions
Heat a large soup pot over medium heat and add olive oil. Heat until oil is shimmering, about 1 minute. Add sliced onions and cook over medium-low heat until onions are brown and soft, about 40 minutes.
Add garlic and mushrooms, turn heat to medium-high and cook until mushrooms are totally wilted and beginning to brown.
Add barley, stock and vinegar and cook until barley is plump and tender, about 20 minutes.
Video
Notes
If soup is too thick, add more vegetable stock or water.