Decide whether this kitchen should do it
Before the first bag, ask whether the kitchen has the equipment, the people and the to do this the same way every time.
A named person owns the method. The bath holds its temperature, and a probe and a fast way to cool are on hand.
A small circulator and a phone app are used to cook for a function, with no method and no record.
Don't do it if you can't hold and prove the temperature, can't cool fast, or would stack risks, such as large portions of tenderised meat cooked long and low. Some groups allow it only with central approval. In Victoria, a class 2 business doing sous vide below 75 °C needs a . Undercooked sous vide carries the same risk as raw food, so treat it as unsuitable for vulnerable people.