Tag URLs without /tag

Hello,

I’m about to launch a new site about recipes and I would like to have a simple and intuitive feature that allows visitors to find articles based on ingredients. Example:
http://www.mysite.com/CHOCOLATE
http://www.mysite.com/EGG
http://www.mysite.com/CHERRY

I guess the easiest and best way to achieve this is through tags. I set the permalink structure to be like “/recipes/%category%/%postname%/” and the tag prefix to be “/%tag%”.

Problem is that I’m not getting it to work, since it gets messed with permalinks rule.

Example:
1) http://www.mysite.com/CHOCOLATE <- works and shows all articles related to the tag “CHOCOLATE”

2) I click on an article under the tag “CHOCOLATE” (www.mysite.com/recipes/cakes/chocolate-cake/) <- 404 error – not found

Any idea how to make it work?

Thanks a lot.