There is a particular region in today's renaissance of Chinese cooking that is often, overlooked, Chinatown. In other words, Chinese food cooked in Chinatown for Chinese people-stir-fried noodles, bao buns, pork buns, scallion pancakes, wontons, potstickers, spring rolls, the list goes on. At the very center of this beloved cuisine were the old teahouses that served countless mouth-watering snacks and treats, providing delicious affordable fuel that...