Bring barley and stock to ... stock. Saute sliced mushrooms in 1 tablespoon oil or butter. Add to soup. Simmer all together. Season. ... soup is too thick.
Melt 1/2 of butter in large saucepan. Cook mushrooms until tender. Remove mushrooms and ... water, stir into soup. Heat to boil, stirring ... Garnish with chopped parsley.