A jar of Wang's Fermented Black Bean Paste An essential condiment for make Jajangmyeon, Korean Black Bean Sauce Noodles 17.6 oz Jar (1.2 lbs.) Product of Korea Fermented Black Bean Paste (Chunjang) is a black, salty soybean paste that is used for making the sauce for Korean Black ...A jar of Wang's Fermented Black Bean Paste An essential condiment for make Jajangmyeon, Korean Black Bean Sauce Noodles 17.6 oz Jar (1.2 lbs.) Product of Korea Fermented Black Bean Paste (Chunjang) is a black, salty soybean paste that is used for making the sauce for Korean Black Bean Sauce Noodles, Jajangmyeon. What makes this sauce different from the Chinese kind is that Korean Black Bean Paste contains caramel, creating a perfect balance of savory and sweet flavors.