Nutritional content of Meng milk powder Meng milk powder is made from fresh milk source through strict disinfection, treatment, dehydration and other processes. It is one of the important dairy products in our daily life. Meng milk powder is rich in nutrients, such as natural protein, calcium, vitamins, etc., and has many benefits for human health. The nutritional content of Mongolian milk powder: protein. Protein in milk powder is one of the very important nutrients. The protein content in Mongolian milk powder is as high as 26-30%, which is high protein.