The constitution of a certain object is appreciated by its internal action. For example, the form of salt is appreciated by the interaction of salty tastes, and the form of sugar is appreciated by the interaction of sweet tastes. Tastes and qualitative constitution are the basic principles in understanding the form of an object.
(SRIMAD BHAGAVATAM-----3:26:39------PURPORT).

The conditioned souls who have come to this material world for material sense gratification are regulated by the injunctions of the Vedic literature. Sense gratification is just like salt. One cannot take too much or too little, but one must take some salt in order to make one's foodstuff palatable.
(SRIMAD BHAGAVATAM-----3:15:8------PURPORT).

One may get indigestion due to eating too many milk preparations—condensed milk, sweet rice, and so on. But even though there is indigestion or diarrhea, another milk preparation—yogurt mixed with black pepper and salt—will immediately cure these maladies. In other words, one milk preparation can cause indigestion and diarrhea, and another milk preparation can cure them.
(SRIMAD BHAGAVATAM-----4:30:19------PURPORT).

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