551HORAI "Ponzu vinegared pork bun & shrimp dumplings" campaign This year too! You can get "551 ponzu"!
It was announced on the official website that a limited-time campaign will be held at 551 HORAI as "Ponzu buns and shrimp dumplings to eat refreshingly". If you purchase "pork bun" or "shrimp shumai" for a limited time, you will get "551 ponzu".