A coolant mixture, method and apparatus for accelerated cooling of product, especially foodstuffs, is disclosed. A further aspect of this invention is the optimizing and controlling of the cooling process and the cooling medium without the need for pressurization. It further relates to a method of effectively increasing the flexibility and maximizing of cooling capacity and its storage without inducing a change of physical state within the coolant nor incurring high energy costs. Finally it relates to effectively eliminating any corrosive properties of the cooling medium.