Kim Jonguk Coffee is a cafe in the back alleys near Ttukseom Station in Seongsu where beans are roasted and coffee is brewed on site. It offers drip coffee made from a range of high-grade varieties, along with a Yemen iced Dutch latte. You can smell the beans in person, and the coffee workshop has parking for up to two cars. The owner explains the coffee and encourages tasting and buying, which makes it hard to rest quietly or work.