Mustard greens kimchi, known as gat-kimchi (각각치) in Korean, has a slightly sweet and sour flavor with a crispy texture that balances its tender leafy greens. It’s not the kimchi most people think of first, but once you’ve had it, it’s easy to see why some cooks call it their new favorite.

Dolsan Island, in the southernmost region of Korea near the city of Yeosu, is renowned for its gat-kimchi — mustard greens with thick, tender stems, the kind grown on Dolsan, are the gold standard for this recipe. Compared to regular napa cabbage kimchi, gat-kimchi swaps in mustard greens for a crunchier, crisper bite with a peppery, sweet-and-sour edge.

Not every kimchi has to be fiery — our White Kimchi skips the chili entirely, while Chonggak Kimchi swaps the greens for crunchy ponytail radish.