To reduce the consumption of salt, the Japanese made a spoon with salt taste.When using this spoon,by sending an electric wave,it concentrates the taste of the ion molecules in the food salt on the tongue and makes the user taste a saltier taste than the actual food.In this way,there is no need to add salt to the food.

In my opinion, it is a very creative idea that should be seen to what extent it is practical in practice, but the question is whether the effect will diminish after washing or not?!