This magical plant is a mysterious fruit that originated in tropical Africa. It contains a protease that changes the taste (also known as the mysterious fruit element). Although it can't really change the taste of food, it can change people's taste, so people will feel sweet after eating mysterious fruit. When eating this mysterious fruit, this mysterious fruit element will be distributed on the taste cell membrane of the tongue. In a neutral pH environment, the sweet receptor protein on the mysterious fruit element will not bind to the sweet receptor site, so the mysterious fruit element has no sweetness. After eating acidic food, the structure of taste cell membrane on the tongue will change because of the existence of acid. At this time, the sweet receptor protein will combine with the sweet receptor site, so it will feel sweet, and the mysterious fruit will be tightly combined with the tongue surface for more than 2 hours. Within 1 ~ 2 hours after eating the mysterious fruit, the acidic food you eat will feel extremely sweet. Therefore, the function of changing the taste of mysterious fruit is a natural, physical and safe change, which is suitable for daily consumption.