I grew up in the NJ and NY where the kosher delis had amazing chicken soup and also incredible mushroom barley soup!
I happen to really love mushrooms so I wanted my mushroom barley soup to have a strong shroom flavor. I really think the mushroom stock AND the dried porcinis give this soup a rich flavor. Although I used a vegetarian mushroom stock, I’m sure just a plain veggie stock would work too. The result: a super satisfying, warming and hearty soup!