From Dinner at Buckingham Palace by Charles Oliver, who worked for the British Royal Family. If fresh peas are available, cook one cup in water until soft and rub them through a sieve into the soup. Should they be very young and small, include the pods.
Original pinner says: Mushroom Soup - we've made this TWICE this week. I am not kidding when I say this is to die for. \\ @Samantha notes: add a little white wine with cooking the garlic and mushrooms. Leave some mushroom chunks a little bigger. SO YUMMY.