User guide: Egg yolk powder contains abundant nutrient content of Lecithin and protein as well as other, and it has good emulsibility and funtions of expansion, color adjustment, and flavor enhancing. Therefore, it is widely applicable to the food industry and a large number of products, lke the baked products, cold drinks, seasonings, mayonnaises and baby food etc. In addition, the yolk oil and lecithin may be abstracted from the yolk powder and applicable to the pharmacy and healthcare food.