Rest your chopsticks flat across the top of your bowl or on a chopstick rest (hashioki) between bites, never planted upright in the rice.
If you want to share food, place it on the other person’s plate with your chopsticks, or use the opposite (thicker) end of your own chopsticks to serve, don’t hand it chopstick-tip to chopstick-tip.
A few more chopstick manners worth knowing, from the same family of taboos:
- Don’t rub disposable chopsticks together to smooth splinters (kosuribashi) — it implies your host gave you cheap ones.
- Don’t spear food with a chopstick to lift it (tsukibashi). If something won’t cooperate, bring the bowl closer to your mouth instead.
- Don’t point with your chopsticks, at a person, a dish, or anything else — treat them as tools for eating, not gesturing.
- Don’t cross them on the table or rest; lay them parallel, tips pointing left.