I'm a little late on this one, but I finally tried (and have a photo of) Chile en Nogada! It's a typical dish in the weeks surrounding Independence (possibly because it's red, white and green?). It's a poblano chile filled with a "picadillo" (mixture containing chopped or ground meat, fruits and spices) and topped with a walnut-based cream sauce and pomegranate seeds. From what I could tell it had nuts, pineapple and raisins mixed into the meat (though I've seen online it can have apple, pear and peach). A friend ordered it in Tepoztlan and let me take a picture and try a bite!