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fear and loathing
American Idle
The 5th taste:
1. sweet (sucrose)
2. sour (vinegar, lemon)
3. salty (NaCl)
4. bitter (endive)
5. umami ( "meaty," "savory": (Parmesan cheese, bacon, seared meat, mushrooms): chemically speaking it's glutamic acid or its sodium salt, MSG.
1-4 are perceived via specific taste buds in the mouth.
Umami, and the panoply of subtle flavors are "tasted" with the sense of smell, which occurs mostly in the nares.
1. sweet (sucrose)
2. sour (vinegar, lemon)
3. salty (NaCl)
4. bitter (endive)
5. umami ( "meaty," "savory": (Parmesan cheese, bacon, seared meat, mushrooms): chemically speaking it's glutamic acid or its sodium salt, MSG.

1-4 are perceived via specific taste buds in the mouth.
Umami, and the panoply of subtle flavors are "tasted" with the sense of smell, which occurs mostly in the nares.