Goryeo Bulgogi in Cheongju is a frozen samgyeopsal restaurant. The thinly sliced pork belly is dipped in soy sauce liquid and grilled on a square iron plate, and the remaining meat is finished as fried rice. Regulars have been coming for 20 years, and the place is always full, so a wait is required. Grease vapor hangs in the air inside, so the smell can soak into your clothes.