Thanks to the circuit breaker, we discovered TTS via delivery, as we would not have ventured to Geylang to try it. The soups arrived hot, and all the three we ordered were excellent (turtle claypot, black chicken, and cordyceps) - in many ways better than at Soup Restaurant! To accompany the soup, the yam rice is not extremely yummy, but still yammy and quite good. Even the mundane radish omelette is commendable. Tan Ser Seng is the Tan Tock Seng of soups!