Cryogenic tumblers are used to envelop a substrate with a sauce or another kind of coating. The end-product of the batch process is an IQF (individually quick frozen) added value product. Cryogenic coating is fast, flexible and efficient. The process can be fine-tuned to prevent breakage and to inhibit the production of fines. Due to special internal parts, the discharging of the tumbler is swift, and no segregation occurs (within 36 seconds). Thanks to specially designed nozzles and injection systems, the amount of coating can be up to 800 % in weight. Tumblers exist in nominal batch sizes of 50 to 800 kg (500 liter to 8800 liter).