Ingredients For the Soup: 1 medium leek (or 1 yellow onion) 1 celery rib, chopped 1 lb brown button mushrooms, chopped or sliced 1 cup hulled barley (rinsed and drained well) 1.5 Tbsp tomato paste 3 tsp onion powder 3 Tbsp tamari or shoyu 3 Tbsp nutritional yeast 10 sprigs fresh thyme (or…