When should the indicating thermometer be checked against the vat pasteurizer temperature recording chart?

The indicating thermometer should be checked against the vat pasteurizer temperature recording chart at the beginning of the holding period. This is crucial because it ensures that the temperature is accurate and that the pasteurization process is starting under the correct conditions. Monitoring at the start allows for immediate identification of any discrepancies or issues that could affect the safety and quality of the pasteurized product.

Starting the process with a verified temperature is fundamental in pasteurization, as it directly relates to ensuring that the holds at specified temperatures are met throughout the entire process. Conducting checks only at the end of the holding period, after specific time intervals, or once a day does not provide the necessary assurance that the pasteurization conditions were adequate from the outset.