I've scoured the internet for many months on how to add more revenues to my food blog besides from Google Adsense. Not one site gave me an in-depth answer, but I've experimented on some on my own. Here's a list of online services that can help you increase exposure on recipes or serve more relevant ads to your blog. I don't endorse any of them so please do your own due diligence. As such, I have not provided any back links to the sites below.

1. Foodie blogroll
2. Mytaste
3. Gourmet ads
4. Tynt
5. Petit chef