United States
Hong KongNon-continuous cooking: the sixty-minute rule
Non-continuous cooking is permitted where the initial heating is no more than 60 minutes, the food is immediately cooled by the standard rules, stored separately and marked, and later cooked to its full required temperature. A written procedure approved by the regulatory authority is required.
Par-cooking is common in busy kitchens and it is one of the more tightly conditioned provisions in the Code.
The conditions
- The initial heating lasts no more than 60 minutes.
- The food is immediately cooled using the standard two-stage cooling rule.
- It is then frozen, or cold-held at 5°C (41°F) or below.
- It is stored separately from ready-to-eat food, and marked to show it needs further cooking.
- It is later cooked to the full required temperature for that food in a single stage.
- A written procedure is prepared and approved by the regulatory authority, and kept on the premises.
Six conditions, all of which have to hold. The sixty minutes is the number to remember, and the written procedure is the requirement kitchens skip.
Why sixty minutes
Because a partial cook takes the food into the danger zone without taking it out the other side.
The heat is enough to wake up spores and not enough to destroy vegetative cells, so the food is in the worst possible state. Capping the first stage limits how long that state persists before cooling begins.
Partly cooked chicken in a cooler looks like cooked chicken. Without a mark, somebody will serve it. That is the failure mode the storage and marking conditions exist to prevent, and it is what a question about this topic usually describes.
The second cook
To the full temperature for that food, in one continuous process. Chicken par-cooked at lunch still goes to 165°F at dinner service.
Partial cooking does not accumulate. Two thirty-minute stages do not add up to a completed cook, and an answer option suggesting they do is wrong.
Where this is genuinely used
Ribs par-cooked in the morning and finished on a grill. Chicken blanched ahead of service. Chips blanched then fried to order.
Chips are worth separating out: potatoes are not a raw animal food, and the risk profile differs. The provision is written for TCS foods where the partial cook matters.
The approval
A written procedure, approved in advance. Not a practice that has always been done this way.
That is the difference between non-continuous cooking as a controlled process and non-continuous cooking as a habit, and it is the distinction the exam is testing when it asks what is required.
Common questions
What is non-continuous cooking?
Cooking food in two stages with cooling and storage in between. It is permitted under six specific conditions, including a first stage of no more than 60 minutes and a written procedure approved in advance.
How long can the first cooking stage be?
No more than 60 minutes. A partial cook wakes spores without destroying vegetative cells, so the cap limits how long the food stays in that state before cooling.
Does the second cook go to a lower temperature?
No. The food is cooked to its full required temperature in one continuous process. Two partial cooks do not add up to a completed one.
How must partly cooked food be stored?
Cooled by the standard two-stage rule, then frozen or held at 5°C (41°F) or below, stored separately from ready-to-eat food, and marked to show it needs further cooking.
Do you need approval for par-cooking?
Yes. A written procedure approved by the regulatory authority and kept on the premises is required, which is the condition kitchens most often skip.