Thanks Oat Yeonnam is a brunch restaurant in Yeonnam, Seoul that serves handmade Greek yogurt and sandwiches. It is a 15-minute walk from Hongdae Station Exit 3, along the Gyeongui Line Forest Trail. The thick yogurt comes with hand-cut fruit and oat granola, and the kitchen also makes avocado, ham and cheese sandwiches. Takeout is available right away and the packaging uses materials chosen with the environment in mind, while the small space means lines get long around noon.