You can't. According to the query of Health and Wellness Network, pig fat oil (including other animal fats) contains many kinds of fatty acids, and the contents of saturated fatty acids and unsaturated fatty acids are similar, so it cannot be compared with ebony oil. Some snacks must be made of lard, such as the famous lard cake and lard omelet, but vegetable oil is not enough. There is also the "chaotic stew" of northeast dishes. The authentic method must use pig fat oil. So sesame oil can't replace pig fat oil.