Cheonghakdong Chik Naengmyeon 청학동칡냉면

The bibim naengmyeon sauce opens sweet and tangy, then the chili hits hard soon after. The mul naengmyeon gets a spoon of hot dadaegi paste too, so people who switch to it to escape the heat often find it spicy anyway. A plate of boiled mandu on the side gives the mouth a break now and then.