Piled high with beans, meat, avocado, shredded lettuce, salty cheese, and some sort of spicy sauce-slathered protein, few things are better than a great mexican sandwich. Whether it's a torta or a cemita, these guys are equal parts quality and quantity. This chicken tingas sandwich from the big new york sandwich book begins with slow simmered chicken braised in chipotle vinegar adobo sweetened with mexican coke and juicy summer tomatoes, otherwise known as tingas.