To turn the chopsticks around when serving food so that the tips of the chopsticks that have touched one’s mouth do not touch the food.
However, the people that I learned etiquette from taught me to turn the chopsticks around. They were not low class by any means, company owners from Kyoto region.
To turn the chopsticks around when serving food so that the tips of the chopsticks that have touched one’s mouth do not touch the food.