Gwaha-ju (과하주; 過夏酒; lit. "summer-passing wine") is a traditional Korean fortified rice wine. The refined rice wine cheongju (also called yakju) is fortified by adding the distilled spirit soju to produce gwaha-ju. Popular varieties include gangha-ju (강하주) of Boseong and Yeonggwang in South Jeolla Province, sinseon-ju (신선주) of Namwon in North Jeolla Province, and yak-soju (약소주) of Suwon in Gyeonggi Province.