Hazırlanışı
1To make the marinade, put the onion, gochujang, soy sauce, garlic, sugar, sake, mirin, and sesame oil in a bowl and mix well to combine. Add the pork and turn to coat the meat. Cover and refrigerate overnight.
2The next day, set a large sauté pan over medium heat. Once it’s hot, add the pork, working in batches so as not to overcrowd the pan and leaving any liquid in the bowl. Cook, stirring occasionally and flipping the meat, until lightly caramelized and golden brown on both sides, about 10 minutes. (If you overcrowd the pan, the meat will steam instead of sear.) Transfer to a platter.
3When the meat is cooked, open the buns, butter the interiors, and toast them until they are a light golden brown.