Disclosed are various embodiments of either self-contained, separate or combinations thereof of modular units for the processing of comestible products. The modular unit is configured with sections to create hygienic zoning of food to be processed. The modular unit is can contain components to process food from a raw state, such as an animal carcass or freshly harvested produce, through primary and (optionally) secondary processing. The modular unit can be utilized to process various types of food, and, therefore, the modular unit is provided in various embodiments depending on the food to be processed therein, and the types of processing that are desired. The modular unit is constructed and the sections therein are configured such that as the food undergoes processing, it flows through the sections of the modular unit in an orderly manner, which helps to minimize or prevent food safety problems, such as cross contamination.