Any covered container must be clearly labeled with the date and contents using food-safe tape or stickers. FOOD; True Confections - The New York Times

To avoid a "kitchen nightmare," professional standards dictate:

Poorly managed kitchens on the show are frequently criticized for using improper or unsanitary materials to cover food, such as:

Inappropriate use can cause the plastic to melt into the dish.

These are non-food-safe and can leach ink or chemicals into the food.

Essential for lining trays to prevent sticking and ensure even cooking.

Leaving food completely exposed in the fridge is a major health violation often highlighted by Ramsay. Correct Paper Covering Practices