Dissolve 1 teaspoon full in warm water and drink it. It works when your stomach is weak such as loss of appetite, stomachache, diarrhea, constipation, heartburn, hangover, bloating, and nausea. It makes your blood clean and fluent. It works gentler than stomach medicine and makes you feel warm inside. Plum has intense anti-germ effect and vitality to where it can be eaten after 100 years of pickling. It is especially recommended for people with weak stomach. Keep plum essence close to you. You will be addicted to the sourness once you are used to it. This is made from unripe plum from Kishu, where is known for their plums. The plums are grinded and boiled to get the plum essence concentration. It can be used for refreshing or hidden flavor for your dish. Japanese plums have been health food that promotes digestion, circulation and detoxing for a long time. At mealtime, umeboshi was always at the table. Even during the war when people were poor, it was wisdom of the people to eat umeboshi with white rice or rice ball with umeboshi in it to keep their body stay alive. Of course, umeboshi are sold in any supermarket or convenience store. However, as the economy grows, diet of Japanese changed. We eat western food, Chinese food, food from various nations, gourmet food, fast food, various pasta and noodles. People tend to forget the wonderful blessing from the nature. People get weak stomach when they are under stress may have increased because of this.