Dried nuts contain healthy fats, fiber, vitamins and minerals. It can improve nutrition, boost the immune system, improve heart health, and boost energy. Copra is usually harvested and ground, then boiled in water to extract the coconut oil. It was used by Pacific Island cultures and became a valuable trade item for merchants in the South Sea and South Asia in the 1860s. Currently coconut oil (70%) has been extracted by crushed copra; The resulting product is called copra cake or copra meal (30%).The coconut cake left after the oil is extracted contains 18–25% protein, but contains enough dietary fiber that humans would not consume much but often it is food for reptiles.