Rincon has hands down the best Mexican food in Somerville. You can’t go wrong with anything on the menu here, like the rich cabeza tacos and large bowls of pozole, but there are two clear standouts: the citrusy, deeply savory cochinita pibil tacos and their sweet cinnamon horchata that’s almost as thick as a milkshake. The staff are warm and friendly, and it’s a pretty ideal place for a quick lunch or weekday dinner.