What is "ongryugwan"

Okryugwan or Okryu Restaurant is a restaurant in Pyongyang, North Korea, founded in 1960. North Korea analyst Andrei Lankov describes it as one of two restaurants—the other being Ch'ongryugwan—which have "defined the culinary life of Pyongyang" since the 1980s, and a "living museum of culinary art". The chief chef is Ra Suk-gyong.