PTC taste is the ability to taste the bitter chemical phenylthiocarbamide; for some people it tastes very bitter, while for others it seems almost tasteless.

Quick scoop

This trait is strongly linked to variation in the TAS2R38 taste receptor gene, which is why it’s often used in genetics lessons and simple taste tests.

What it means

  • Tasters usually describe PTC as bitter, harsh, or unpleasant.
  • Non-tasters often say they barely taste anything at all.
  • It is not perfectly all-or-nothing ; some people fall in between, and the trait can vary by test method.

Why people talk about it

PTC tasting became famous because it’s a classic example of how genes can affect perception, and it has been used in classroom genetics experiments and research on taste sensitivity.

If you want, I can also explain why some people are “tasters” and others are not in a very simple way.