In Korea's sesame oil aisle, real differences in quality are nearly invisible on the shelf. Since 1997, master Jang Se-sam has pressed oil under uncompromising principles — selected raw sesame, same-day pressing, precisely managed roasting temperatures. His oil had long been proven by taste; visually, it was indistinguishable from every bottle beside it. Our task was to translate twenty-five years of craft into something you can see.