The present invention relates to a composition in the form of an oil-in-water emulsion, preferably a mayonnaise-type emulsion, containing ground white or yellow mustard seed and enzyme modified egg yolk. This way the amount of oil in the emulsion can be reduced, while keeping the structure of full-fat mayo, without using large amounts of thickeners or water-structurants. Moreover the invention relates to the use of ground white or yellow mustard seed as an ingredient of the emulsion to reduce the concentration of oil in the emulsion.