What is the output of duck neck oil?

Thirty percent. According to Zhihu, duck neck oil contains high unsaturated fatty acids, and the oil yield is only 30% of other pure fats. But because of its unique taste and flavor, it is widely used in cooking and medicine. Duck neck oil is rich in unsaturated fatty acids, vitamin E and other nutrients, which has the function of protecting liver and resisting oxidation, so it has gradually become one of the healthy ingredients that people pay attention to in recent years.