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Old 12-05-2011, 02:46 PM
Kylede Kylede is offline
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Join Date: Sep 2008
Location: New York
Posts: 204
The human sense of taste reacts to 5 different chemicals resulting in 5 basic tastes

Sweet - caused by the presence of sugars
Sour - caused by the presence of H+ ions(hydrogen) in solution (acidity)
Saltiness - caused by the presence of Na+ ions (sodium) in solution
Bitterness - caused by the presence of alkaloids (like quinine)
Unami - caused by the presence of glutamates and nucleotides - referred to by many "foodies" as 'savory'