Because in India people think that the right hand is clean and the left hand is dirty.

This is related to another habit of Indians.

After Indians go to the toilet, they do not wipe with paper but flush with water. When flushing, they use their left hand instead of their right hand.

When eating in a restaurant or an Indian home, when the meal is almost finished, the host will often bring everyone a small bowl of warm water with a piece of lemon floating on it. This water must not be drunk, it is used for washing hands.

After the meal, a plate of green wheat grain-shaped spices is served for everyone to chew to eliminate the bad smell in the mouth.

Extended information: Indians still retain some traditional habits in the way they eat.

Although in more formal occasions, people use forks and spoons to eat, at home, it is more enjoyable to eat with their hands: place a large plate in front of each person, put the rice on it, top it with vegetables and soup, and then use your hands to eat it.

Mix it, knead it into a ball, and put it in your mouth.

In street food stalls, snack bars and temples, people usually use a plate made of pressed dry leaves to serve food. Some restaurants give each diner a fresh large leaf to serve rice and other foods.

, which is very environmentally friendly.