A spray-chilled particulate delivery system that has a crystalline matrix structure and includes a volatile hydrophobic active ingredient and a carrier material of erythritol, mannitol and mixtures thereof 75% or more of the carrier material, relative to the total weight of the carrier material, is in crystalline form. The system is prepared by a process that includes the steps of forming a melt of the carrier material, incorporating a volatile hydrophobic active ingredient into the melt, forming a melt-mixture comprising an emulsion, dispersion or suspension of the volatile hydrophobic active ingredient in the melt, forming discrete particles of the melt mixture, and cooling the discrete particles.