What is the taste in your mouth?
The tongue, soft palate, and epiglottis are covered with structures known as taste buds, or lingual papillae, that allow humans to sense different tastes in the foods they eat. There are five distinct tastes that can be registered by the taste buds, but whether each taste bud can sense one or many tastes is not known. The ability to sense each taste is present in all areas of the mouth. The five tastes are salty, sweet, bitter, sour, and umami or "savory" -- each linked to a specific chemical in foods. In general, humans have evolved to find salty, sweet, and umami foods pleasant, while sour and bitter foods are usually unpleasant. This is because sour and bitter tastes may indicate rotten food or poison, while nutritious, high-calorie foods usually taste salty, sweet, or savory.