https://www.cnchemsino.com/application/chocolate.html Emulsifiers are used in chocolate to make liquid chocolate thinner.Normally, liquid chocolate with an added emulsifier has lower viscosity.Emulsifiers also help to hold the ingredients in chocolate together. An emulsifier does this by reducing the friction between cocoa butter and other chocolate ingredients such as sugar, cocoa solids, or powdered milk.In this way ,the usage of emulsifiers will help to control costs by replacing cocoa butter, making chocolate more affordable for all.