ZERO CAFE - hongdae is a zero-sugar cafe in Hongdae that sells coffee and desserts sweetened with sugar substitutes instead of sugar. The cream and ice cream contain no sugar, and the cafe serves donuts, cakes, and drinks. The overnight chocolate oat is presented as a menu item with a high protein content, and a blueberry banana smoothie is also available. It is a cafe with trees in view and a space to rest while walking.