Food left inside after the oven is turned off continues to cook because the oven walls and the food itself keep transferring heat. This resting period is intentionally used for some dishes: soufflés and cheesecake settle without cracking, and bread’s crust firms up. But waiting in the oven is not a storage method; serve the food or cool and store it before it falls below 60°C / 140°F.
The inside of the oven does not cool instantly when the oven is turned off. The walls, racks, baking sheet, and food itself have stored heat and release it slowly. The food’s surface continues to transfer heat to the oven air, while its center transfers heat to its outer layers; that is why the center can rise by a few °C even after the oven is turned off. This is called carryover cooking, and its effect is noticeable in thick pieces; it is almost imperceptible in thin, small pieces. So check what stage the food is at before turning off the oven.
Some recipes intentionally use this effect. Soufflés and cheesecake are cooled gradually with the oven turned off and the door left ajar; a sudden drop in temperature causes the surface to crack and the center to collapse. If bread is left in the oven for a few minutes after baking, its crust stays drier. For meringues and dried fruit, the oven is turned off and the food is left inside overnight; the remaining heat completes the drying. The oven door can be held ajar with a spoon handle for these foods.
For some dishes, however, waiting does harm. If a cake is forgotten in the oven, its edges dry out; vegetables and fish soften in their own steam as they wait, and their texture deteriorates. Fried and breaded foods absorb moisture in a closed oven. Take these foods out of the oven right away and put them on a wire rack. Meat dishes should rest on the counter under loosely tented foil, not in the oven; in thick cuts, carryover heat already raises the internal temperature by a few more °C. Even a delay of a few minutes is noticeable with these dishes.
Ask two questions when deciding. First, should the food continue cooking? If food whose center is already at the desired doneness is left in the oven, it will go past that point; that is why thick cuts of meat are removed a few °C below their target temperature. Second, should the food avoid absorbing moisture? For any food where a crust is desired, the answer is yes, and the food should be removed. Leaving the oven door ajar is a practical compromise between these two needs. If the answer to the two questions is no, do not leave the food in the oven.
Consider food safety separately. A turned-off oven eventually stops keeping food warm; the food inside falls below 60°C / 140°F and remains in the 5–60°C / 41–140°F range. The total time spent in this range should not exceed two hours, or one hour if the kitchen is above 32°C / 90°F. If the food will be served later, do not leave the oven off; set it to 70–90°C / 160–195°F. It is not safe to leave dinner in the oven overnight with the plan to “heat it in the morning”; refrigerate the food within two hours at the latest. If a dish will be served later, set the oven temperature in advance.
Comments (1)
Cheesecake'i fırında soğutmayı bir kez atladım, ortası çöktü ve üstü çatladı. Bu maddedeki açıklama tam karşılığıydı.