AFP: Australian researchers say fat is 'sixth taste'

AFP: Australian researchers say fat is 'sixth taste': "'We know that the human tongue can detect five tastes -- sweet, salty, sour, bitter and umami (a savoury, protein-rich taste contained in foods such as soy sauce and chicken stock),' Russell Keast, from Deakin University, said Monday.
'Through our study we can conclude that humans have a sixth taste -- fat.'"

When I was in school we only had 4 tastes, but that is certainly interesting.