Scientists discover 6th basic taste detected by the tongue

The tongue responds to ammonium chloride as a sixth basic taste, in addition to detecting sweet, sour, salty, bitter and umami flavours, University of Southern California's scientists have discovered. The tongue responds to ammonium chloride through the same protein receptor that signals a sour taste. "If you live in a Scandinavian country, you'll be familiar with...this taste," a scientist said.