During the winter solstice, the earth is frozen and the sky is cold. Some families are accustomed to cooking food with lard in order to make it full of calories and rich in aroma. It is said online that lard is rich in vitamins D and B, with higher nutrient content than any vegetable oil. Moreover, due to its low commercialization, lard does not have many additives like vegetable oil. So, is lard really purer, safer, and more friendly to the human body than vegetable oil? We can take a look at Professor Fan Zhihongs interpretation from the School of Food Science and Nutritional Engineering at China Agricultural University.