Disposable chopsticks around the world are made of different materials: bamboo is common in China, but birch and spruce wood are most common elsewhere. Wood is ideal for chopsticks. It has a slightly rough texture, which is good for ensuring that food doesn’t slip, or that the chopsticks don’t slip from your fingers. And, unlike metal, it doesn’t conduct heat well. Metal chopsticks can become very hot when handling hot food—ouch!