While multiple origin theories and infinite banchan varieties exist, custom dictates highly specific preparations, such as blanched, braised, stir-fried, dried, fermented, and roasted.
Banchan is influenced by Eastern philosophy, says food blogger Kim Chan-Sook, so it should encompass five colors, symbolizing, among other things, the directions: green (or blue) for east, red for south, yellow for center, white for west, and black for north. And it should be served in dishes of 3, 5, 7, or 9 (in yin and yang principles, odd numbers are yang, considered good luck), alongside rice, soup, sauces, and, of course, kimchi—which doesn’t count as banchan. “Kimchi just comes automatically,” Kim says. “It’s expected, like a glass of water.”
Banchan is served prior to the main course. Tables are typically set with a spoon—used to…