Stir-Fried Green Beans with Black Beans

This Asian stir fry features three types of beans: black beans, green beans, and a black bean sauce. While black beans aren’t a typical Asian stir fry ingredient, they are complemented perfectly with the rich and flavorful black bean sauce. Black bean sauce is made from fermenting black soybeans, a process that gives the beans a sharp, pungent, and umami-rich flavor.