Both dry and wet processing steps are one of the most critical for OTA contamination, as this requires about two-three days, after which the bacteria enters into a toxin production phase. Once the coffee bean is contaminated with a fungal propagule this can start producing mycotoxins during this drying period without external indications of contamination. It is, therefore, clear that ten days (parchment drying) and four weeks (dry process) is certainly long enough for mold growth and OTA production during this process. In addition to OTA produced in the ripening cherries, during storage and shipment, the drying process can also significantly increase the OTA levels in green coffee.