A freezer system which partially freezes food products through conductive heat transfer with rotating contact freezers prior to complete freezing of the food products in an enclosed convection freezer. Food products sequentially contact outer surfaces of two rotating contact freezers, which partially freezes the food products to first and second predetermined depths. The partially frozen food products then enter an enclosed convection freezer for complete freezing. Partial freezing of the food products prior to a complete freeze of the food products provides for a greatly increased rate of production of high quality frozen food products.