Food Acceptability and umami
When humans eat, they use all of their senses (sight, hearing, smell, touch and taste) to form general judgments about their food, but it is taste that is the most influential in determining how delicious a food is. Conventionally, it has been thought that our sense of taste is comprised of four basic, or 'primary', tastes, which cannot be replicated by mixing together any of the other primaries: sweet, sour, salt and bitter. However, it is now known that there is actually the fifth primary taste: umami.