Freshly ground spices such as nutmeg, pepper, ginger, cardamom or cloves have an incomparable fragrance. In small quantities, these spices can be easily pulverised and lose their flavour.
Large-scale production is an entirely different matter, however. During the grinding process, conventional mills generate large amounts of thermal energy, which rapidly lead to the loss of the heat-sensitive essential oils along with the flavouring and aromatic substances – as with pepper, for example. Through the use of cryogenic grinding processes, those quality losses can be easily avoided, however. Liquid nitrogen or carbon dioxide compensates for the heat automatically generated during the grinding process.
Due to their high oil content, nutmegs require special mills and especially high processing standards. The product is cooled by spraying it with liquid nitrogen for the grinding process. This maintains the ground nutmegs in a free-flowing state and prevents agglutination (clumping) inside the equipment during the grinding process.
Cold grinding makes PVC reusable
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