Mono Mart Seongsu Branch is a grocery store in Seongsu, Seoul, selling Japanese ingredients and food-service ingredients. Its products include tako wasabi, grilling cheese, cassava chips, and Vietnamese pho broth powder. Products nearing their expiration dates or with damaged takeout packaging carry discount labels, and members receive larger discounts when buying by the box. The store carries many bulk-size products, which makes buying small quantities inconvenient.