Lotus Lab is a small cafe between Myeongdong Cathedral and the Namsan Tunnel entrance in Seoul. It brews hand-drip coffee from acidic beans, serving single origins such as Ethiopia Gesha Village Oma Natural and Peru Geisha with a tea-like aroma and light body. The owner explains the beans, offers recommendations, and brews the drip, and you can choose from beans of various origins. The shop tends to be cold.