A spray-chilled particulate delivery system that has a crystalline matrix structure and comprises a volatile hydrophobic active ingredient and a carrier material selected from the group consisting of erythritol and mannitol and mixtures thereof wherein, relative to the total weight of the carrier material, 75% or more of the carrier material is in crystalline form. The process for preparing the delivery system comprises the steps of (i) forming a melt of a carrier material selected from the group consisting of erythritol and mannitol and mixtures thereof (ii) incorporating a volatile hydrophobic active ingredient into the melt (iii) forming a melt-mixture comprising an emulsion, dispersion or suspension of the volatile hydrophobic active ingredient in the melt (iv) forming discrete particles of the melt mixture, and (v) cooling the discrete particles, so as to form the crystalline delivery system.
