1Heat olive oil in soup pot over medium heat. Add onion and garlic; cook stirring occasionally, until opaque but not brown. Add mushrooms and continue cooking with a lid on; about 10 minutes, until mushrooms are cooked. Add broth, potato, thyme and bay leaf. Simmer until the potato is tender, remove bay leaf, and puree with hand blender. Add milk. Bring to boil and season with salt and pepper.