A dispersion stabiliser precursor composition including one or more of cucurbituril, a variant or a derivative thereof, and one or more oil-in-water macromolecular amphiphilic emulsifier, wherein the composition is in the form of a free flowing powder; and an oil-in-water emulsion composition including one or more of cucurbituril, a variant or a derivative thereof, and one or more oil-in-water macromolecular amphiphilic emulsifier.