Disposable paper bowls can be placed directly on the fire to burn food.

Disposable paper bowls are often convenient containers for serving food, but are not suitable for heating directly over a fire. Doing so may cause the paper bowl to burn, release toxic fumes, and contaminate the food. Paper bowls are usually made from paper pulp or other paper-based materials that burn easily at high temperatures, making them unsuitable as containers for heating food over a fire. If you need to heat food over a fire, choose a container suitable for high temperatures, such as a cooker or wok. Also, to be on the safe side, it's best to follow food handling and safe operating practices to avoid accidental injury or food contamination.