"Pork Koji-Buta" refers to naturally raised Japanese-style pork without the use of growth hormones. The meat from this pork is lean, with no added fat. While it lacks marbling, it remains incredibly tender, making it suitable for a wide range of dishes. It is a good choice for those who are watching their diet or trying to lose weight, as it is relatively low in calories. While various dishes can be prepared with pork koji-buta, it may not be ideal for slow cooking because the meat is already tender, and prolonged cooking could make it overly soft. When purchasing pork koji-buta, look for meat with a light pink color and no signs of discoloration.