Try the Coconut Matcha or the Grand Ma-cha with pumpkin cream, both built on organic ceremonial-grade matcha sourced from Boseong in southern Korea. The Seongsu flagship uses a robotic arm to whisk the matcha to a uniform foam. Beyond drinks, the menu runs to soft-serve, roll cakes, and matcha-leaning desserts. About five minutes' walk from Ttukseom Station (Line 2). Powder and merch are sold to take home.