Dwaeji gukbap wasn't invented in a restaurant kitchen. Here's where it actually came from — and how to order it without pointing helplessly at the menu.
A typical 따로국밥 (ttaro-gukbap) setup — soup and rice served separately, banchan on the side. Photo by CYAN, CC BY-SA 4.0, via Wikimedia Commons.
When war broke out in June 1950, North Korean forces advanced so fast that by that summer, South Korean and UN troops had been pushed back to the Nakdong River line, with much of the country in ruins and Busan left as essentially the last unoccupied city. That winter, Chinese forces entered the war and pushed the front south again; around the same time, about 100,000 refugees from Hamgyong Province and elsewhere were evacuated by sea from the port of Heungnam, mostly heading first to Geoje Island before scattering to Busan and elsewhere.
With no food, no shelter, and barely any clothing, the most widely accepted account is that in refugee settlements all over Busan, people started getting hold of pork bone offcuts from U.S. military bases — which would otherwise have been thrown out — and boiling them to eat. It's the version most people point to, but it remains one widely shared account among several; enough historical threads are tangled together in this period that no single origin story can be stated as settled fact.
What they made barely resembles today's bowl, and for decades almost nobody admitted to liking it. The stigma is generally traced to hygiene: the dish was built from what were essentially discarded scraps, and that association was enough that the dish could not even be listed openly on menus until the 1990s. What outlasted that stigma is now the dish locals order without a second thought.
The three names below each originated in a specific region, but the line between them has blurred — most shops now cook their own version rather than following one region's method, and even locals often can't tell which style they're eating by taste alone. What the three do share is geography: all three belong to Gyeongsang Province, and dwaeji gukbap is generally thought to have originated in this region. Today, the place Koreans most associate with dwaeji gukbap is, by a wide margin, Busan.