Although not directly related to food, Ratu Boko Palace has a rich cultural history that dates back to the 8th century during the Sailendra Dynasty and later the Mataram Kingdom. It is an archaeological site known for its grandeur and the mystique surrounding its past. It's important to note that the actual historical records of the specific foods consumed at Ratu Boko Palace are scarce. However, the food culture in Yogyakarta reflects a blend of indigenous Javanese and influences from Chinese, Indian, Arabic, and European cuisines due to centuries of trade and colonization. Staple ingredients typically include rice, vegetables, spices, and various proteins, excluding cow meat considering the Javanese respect for the animal.
Please note that the restaurants listed above are generally in the vicinity of Ratu Boko Palace, which itself is not a culinary destination but a historical site surrounded by countryside where dining options may be limited. The famous food dishes recommended are readily available in Yogyakarta city, which is known for its culinary diversity and richness.