I saw this question, and it made me think about a similar question regarding the A Song of Ice and Fire universe. Are there some resources (online or otherwise) that you can suggest regarding recipes for food items for the ASOIAF series?
There used to be a blog specifically for this called Cooking Ice and Fire, but unfortunately it's down.
However, there is an official cook book called Feast of Ice and Fire.
There are two really good recipe books, one of which is already listed here (A Feast of Ice and Fire). The other is The Unofficial Game of Thrones Cookbook. They're both works of art and I enjoy comparing the recipes in both books.
A Feast of Ice and Fire
This book is endorsed by George R. R. Martin and is the better book in my opinion due to its inclusion of pictures. A Feast of Ice and Fire also typically has two versions of each recipe, one that's more historically accurate and one "modern" recipe that is perhaps better suited to the typical Western palate.
The Unofficial Game of Thrones Cookbook
There have been some issues with The Unofficial Game of Thrones Cookbook with plagiarism — some people say that the recipes are copied from other unofficial cookbooks and slapped with a new GoT-inspired title.
For a diehard fan, you need both cookbooks, but if you're interested in just tasting a few recipes or getting a present for a GoT fan, the official Feast of Ice and Fire is the one to go with.