Sopa de Gallina, in the restaurant "Doña Mary", on the Libramiento outside of Pátzcuaro. This place was started by some friends from México City, to serve Hen Soup, D.F. style. The place is simple but very clean. If you like chicken soup, you'll love this. It's a large bowl of broth, with garbanzos, rice, and the cut of chicken of your choice.
This one is for the adventurous: it's the hen's reproductive apparatus, so that the bowl comes with little, unborn eggs in the soup.
I chose the pechuga, or chicken breast version.