Bong Su restaurant has produced mini recipe booklets as souvenirs featuring their cocktails. I'm not sure when they're available and whether or not they're free, but they do intend to make them available to the public. I think this is a great idea- it reminds visitors of where they got that great drink they liked, and allows them to (try to) make it at home. And they did a nice job with these booklets- they're spiral bound with thick laminated pages.
Camper's Book: Tonic Water AKA G&T WTF is now available for sale.