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In addition to taste and melting behavior, the gloss is an important quality criterion of chocolate products. Differences considering the gloss on products can be attributed to different causes in the production process. The chocolate that has been pre‐crystallized by shearing and supercooling is further cooled, crystallized and transported as a solid chocolate out of the cooling process. The cooling of the chocolate is largely unexplored in a paternoster refrigerator and therefore the resulting streaming profile and temperature profile are numerically studied in this work. [ABSTRACT FROM AUTHOR]