Bamboo lunch boxes are primarily designed for cold or room temperature foods and are not suitable for hot foods. The natural properties of bamboo make it sensitive to extreme temperatures, including heat from hot foods.

Using a bamboo lunch box for hot foods can cause the bamboo to dry out, crack, or become damaged over time. Additionally, bamboo lunch boxes do not have the insulation needed to keep hot foods at a safe and appropriate temperature.

If you want to use your bamboo lunch box for hot foods, it is recommended to transfer the hot food to a separate insulated container designed for keeping food hot. Look for containers made from materials such as stainless steel or thermal insulated containers that can maintain the temperature of your hot food.

For best results, use your bamboo lunch box to pack and enjoy cold or room temperature foods, such as salads, sandwiches, fruits, sushi, or other similar dishes. It will keep your meals fresh and enjoyable while contributing to eco-friendly and sustainable practices.