Which Korean cold noodle dish is mixed with spicy gochujang sauce?

Which Korean cold noodle dish is mixed with spicy gochujang sauce? The answer is bibim naengmyeon.

Bibim naengmyeon is a Korean cold-noodle dish in which noodles are mixed with a spicy, tangy sauce centered on gochujang, Korean red-chili paste. The sauce commonly also includes vinegar and sugar, and the bowl is often garnished with cucumber, pickled radish, pear, and a boiled egg. Unlike soup-based naengmyeon, it is served with little or no broth.

Naengmyeon means “cold noodles” and is associated with northern Korean cuisine. The two best-known styles are mul naengmyeon, served in a chilled broth, and bibim naengmyeon, mixed with a red sauce. Bibim naengmyeon is especially linked to Hamhung, where chewy noodles made with potato or sweet-potato starch are common.

A related dish that often causes confusion is bibim-guksu. It is also a cold, spicy noodle dish, but it generally uses thin wheat somyeon rather than the distinctive buckwheat- or starch-based noodles of naengmyeon. Hoe naengmyeon is another variation: it adds marinated raw fish, often skate, to the spicy preparation. Diners typically mix the noodles thoroughly before eating.