Emulsifiers are mandatory to be used in the production of coffee mate, generally using DMG (mono- and diglycerides), Span 60, sodium stearyl lactylate, etc. The use of a single emulsifier generally fails to achieve the effect, and multiple emulsifiers are often used in combination. It is best to use hydrophilic and lipophilic emulsifiers for compounding, in order to play a better synergistic effect and make the product more stable. The specific varieties and proportions need to be determined through experiments.