Upside Coffee Ttukseom sits north of Ttukseom Station in Seongdong-gu, Seoul, and brews coffee from a range of beans. Its signature blend, Sunny Side, is used for a latte with acidity, alongside sweet drinks and espresso. Orders are placed on a touch panel, and bar seats look onto the coffee being made; decaf and vegan milk options are available. Seating is limited, so a wait forms at lunchtime.