The Sohamahos “Dr. Andrew Greszczyszyn” illustrates three to add to the four (sweet, sour, bitter, salty)
Wasabi: does lower tongue, nostril and throat SWEATING…..not just wasabi….but Bcomplex does this (as a group there are others in this “WASABI” flavor effect)
Savory: A watery of the sides and “some of the back top” of the oral mucosa (see Wasabi as different areas!)
Rancid: A “dryness” of what antithesis would be of Savory (the sides and “back top” of the oral cavity)