The World's Best Street Food: Where to find it and how to make it (Lonely Planet Street Food) [Kindle Edition] from the Lonely Planet people. Includes reviews of popular street food for each country and a recipe.
Thanks guys for putting in the Amazon and Amazon Aus links. My fault. I'll remember for next time.
Also available on iTunes for free!
https://itunes.apple.com/au/book/the-worlds-best-street-food…
Amazon.com link
http://www.amazon.com/dp/B0099ZB164