Meet: Canh chua - Vietnamese "sour soup"

[ChristinaM (Hungry in Asheville, NC (still plenty to offer tourists post Hurricane))]

I had a different, much milder Vietnamese soup with catfish. The broth was very delicate and the fish filets perfectly poached. I enjoyed the lettuce garnish:

Sadly the restaurant went out of business. They also made a mean Viet beef stew.