2. Be careful to scrape off the fine spines of bamboo chopsticks. If the new chopsticks smell, you can soak them in vinegar for half an hour or cook them in tea for half an hour.
3. Brand glue on newly bought chopsticks is sometimes difficult to remove. It can be removed slowly by blowing with a hair dryer. You can also bake the trademark sticker slightly with a lighter, so that the glue can be easily peeled off when it melts when heated.