The five basic tastes (sweet, salty, sour, bitter, and umami) are the taste modalities picked up by taste receptors in the mouth. A part of the gustatory system, the information collected by the taste receptors is one part of the information used to create an overall impression of flavor. Scientists have demonstrated that the five basic tastes are distinct from one another. That taste buds can distinguish between the different tastes by detecting interaction with different molecules or ions. There is some debate about whether there are more than five basic tastes, with some scientists advocating for pungency, astringency, and fat taste, among others.