There is provided an emulsifier composition comprising (a) a diacetyl tartaric acid ester of mono- and diglycerides (DATEM) (b) free acetic acid in an amount of less than 0.4 wt % based on the amount of DATEM and (c) a salt or base, wherein the salt or base is capable of donating a metal ion to one or more carboxylic acids present in the DATEM to form a salt of the carboxylic acid present in the DATEM, wherein the salt or base is present in an amount to provide a degree of neutralisation of at least 0.25 mol %.