Dolsan island, off the port city of Yeosu in South Jeolla, grows a purple-tinged mustard green called gat that is milder and more tender than mainland mustard leaves, and gat kimchi (갓김치) made from it is the region's pride. The leaves keep a hot, wasabi-like bite that softens and turns tangy after a week or two of fermenting. Jeolla kimchi is usually heavy with fish sauce and salted anchovy; this version gets its depth from a kelp-and-rice porridge, pear, onion and soy, so it is vegan. Eat it with plain rice, noodles or on the side of jeon. Chef's tip: salt the leaves stems-first and turn them halfway; the thick stems need longer than the leaves.