They have just signed a deal with Random House for a Westerosi cookbook. It will be called A FEAST OF ICE AND FIRE.
But I'll let them tell you about it, here:
http://innatthecrossroads.com/2011/09/30/cookbook-of-ice-and-fire/
Read all about it... and check out their blog while you're at it, and you may be baking lemocakes in no time.