I am looking for real Tlacoyos (filled with either beans, habas or requeson), made with blue corn masa similar to the ones I used to eat in the streets of Mexico City. They were usually topped with nopales or quelites, some queso and green salsa. I am willing to drive anywhere in the city. I have seen many faux versions, but never the real thing..

Any ideas or leads? Here is a picture of what they are supposed to look like:

http://www.flickr.com/photos/joykopin...

Thanks in advance!