What effect does the sour taste of *umeboshi* have on the digestive system?
Answer
It stimulates the secretion of saliva and gastric juices.
The sour taste signals the body to secrete saliva and gastric juices, which are necessary for efficient food breakdown and improved appetite.

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Why is the fresh Japanese plum (*Ume*) fruit generally too sour for direct consumption?Which two beneficial organic acids are notably introduced into *umeboshi* via the fermentation process?What effect does the sour taste of *umeboshi* have on the digestive system?In the context of fatigue recovery, what is the primary role of the salt component in *umeboshi*?How does *umeboshi* indirectly support the body's natural defenses or immunity?Which specific compound related to protective elements has been noted in scientific studies regarding the *Ume* fruit?What common minerals are explicitly listed as being present in the nutritional profile of *umeboshi*?What preparation step contributes the deep red color and additional antioxidants to *umeboshi*?The traditional perception of *umeboshi*'s detoxification capabilities is rooted in its positive impact on which key bodily functions?How does the nutritional benefit profile of *umeboshi* fundamentally differ from that of a fresh, standard Western plum?