Just wash the dishes and chopsticks with tea before eating in a restaurant. In fact, the biggest effect of doing this is to give yourself peace of mind (of course you will feel cleaner after washing it yourself).

Of course, it will be cleaner if you wash it more than once.

So why use tea?

Several guests came to the restaurant, and they must be ordering dishes while having tea (except for those who had already made reservations), and the bowls and chopsticks were also brought out.

Then it’s time to chat and wait for the food to be served. Those who love cleanliness among them can wash themselves with the fresh tea (psychology: this tea is for drinking, and drinkable tea for washing is of course clean).

Later, the phenomenon of washing dishes and chopsticks with tea gradually became widespread.

Tea, originally used by restaurants to express welcome to guests, is now considered by guests to be "safe water" for washing dishes and chopsticks.

Now when my friends and I eat in a restaurant outside, a few minutes after the tea is served and the dishes are served, they will bring us a small basin to hold the washed tea.