I love bok choy. I really do. I love it in stir fry because it adds such a wonderful crunch and flavor. There is only one problem: unless I am making a stir fry to feed 10, I always have leftover bok choy and I just don’t know what to do with it. Now, as I have written about before, I hate wasting food, so I have tried it in salads and have never been crazy about it. I have tried braising it and that’s ok. But I really wanted to find a way to use my leftover bok choy that would be tasty and exciting. And I finally did! Sweet potato-bok choy soup….