Stick out your tongue and touch your finger to it. Yu will feel two things at once: Your finger will feel your tongue. In turn, your tongue will feel and taste your finger. Just which tastes it picks up depends on your finger. Five basic possibilities–sweet, salty, bitter, umami (savory) and sour–can come together to yield more nuanced impressions (index finger with a hint of peanut butter, perhaps?). The taste buds themselves look like brain corals at the centre of which are the sensitive tips of taste cells, each of which ends in a thin hair. When you eat, little particles of food are washed over these hairs. If a sugar washes over a sweet taste bud’s hairs, a signal is sent by the nerves under the taste bud to your brain.
- from The Wild Life Of Our Bodies by Robb Dunn, who goes on to add that as late as 2005, no one knew we had taste buds in our guts. I didn’t know this. Did you know this?








