Tao Tan Noodles Ari Hills is a Thai noodle shop on the second floor of Quarter By Ari near Ari station in Bangkok. It serves noodles centred on clear-broth pho, yen ta fo tom yum, and tom yum pork bone hangover soup. Yen ta fo tom yum is sour, slightly spicy and sweet. At lunchtime local office workers queue to eat here, and the room is large with generous space between tables.