Had lunch at Cemitas Puebla the other day.
I enjoyed the al pastor cemita, one of the best sandwiches I've enjoyed for sure !!
I was going to bring home the tacos Arabes (that's Arab tacos) but 2 of the three didn't quite make the ride home.

Cemitas Puebla
3619 W North Avenue (just east of Pulaski)
Chicago
www.cemitaspuebla.com