Cafe Blue House Olle Market is a takeout cafe at the entrance of Olle Market in Seogwipo, Jeju, selling Jeju-style highballs and milk tea. It offers Jeju lemon, omija, and hallabong highballs, along with Hong Kong milk tea and milk tea ice cream. Highballs come with the base drink and whiskey packed separately so you can mix them to your preferred ratio, and a four-pack gift set takes about five minutes to make. The cafe is built around takeout, so it is not suited to sitting and drinking for a long time.