Yesterday, an old friend sent me a picture of her family dinner, which she prepared. She was never much of a cook, so I was a bit surprised. It's the first I've seen her cook in 25 years. Here is the spread.     I immediately zoomed in on one dish - the okra.     For the first 20-odd years I lived in China, I never saw okra - no one knew what it was. I managed to find its Chinese name ( 秋葵 - qiū kuí) in a scientific dictionary, but that didn't help. I ju