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All chocolate products contain 0.5% of lecithin (E322) or ammonium phosphatide (E 442). These emulsifiers are added to provide the right consistency of the chocolate, so it can be moulded into plates of chocolate, chocolate bars etc. If the chocolate has been stored at too high temperatures, its surface may appear dull or white. This is called bloom' which makes the product less attractive to the customer.
What is the highest melting temperature of chocolate? [duplicate] 1  The typical tricks used by chocolate manufacturers is to change the viscosity of chocolate by adding a gel like xanthan gum or glycerine. The other trick is to incorporate more water into the chocolate with the aid of an emulsifier such as lecithin.