Kimchi (김치) the most common sidedish and maybe known as one of Korean trademark. Kimchi is a korean fermented dish which made out of various ingredients, common one is napa cabbage but actually they can made kimchi out of raw octopus, cuttlefish, chicken, pork, almost everything. Usually korean people made it during winter seasons in the huge amount sufficient for the whole year. Every korean household had their own way to make their's. As the kimchi gets old, it becomes an excellent ingredients for making the Korean most stapple food Kimchi Jjigae (김치찌개).Kimchi Jjigae, kimchi soup, kimchi stew, whatever the name is all of it refers to the bubbling, red hot cauldrom of soup (if you are korean; soul comforting dish) made out of kimchi, pork, and tofu and when it paired with bowl of hot rice it will be enough to keep you warm without any other sidedish.
