"Like butter in French cooking or olive oil in Italian, jangs are the soul of Korean cuisine. These umami sauces are found in every meal, from soups and stews, to salads, marinades, and even desserts, adding depth and complexity to every dish. The foundation of the three main jangs- gochujang, doenjang, and ganjang-is simple. Soybeans, water, and salt are dried, aged, and fermented in earthenware pots, extracting flavor from their environment and...