Yes, we know all about Momofuku's David Chang chowing down at Toro a couple nights ago. But last night, seems he and Curious Cook Harold McGee broke bread (pig tails, actually) at Craigie on Main. A Twitter trail also reveals that they were joined by a mystery man: "John." We at Grub Street fancy ourselves sleuths, when necessary. And now we're curious: We'd like to know just who this John character is. So far, Tony Maws is mum. Certain Johns deny attendance. Who do you think it is? Tell us!