ENGEL. tableware is composed largely of bamboo and maize fibre, which means the products are sustainable. If you would like to know the exact composition of our bamboo tableware products, click here. These bamboo tableware can be used for hot and cold dishes and is dishwasher safe (up to 50 degrees celsius), but not suitable for use in the microwave or oven. You can cut things on them without causing damage. Please note: bamboo products are strong but not unbreakable.