Where is tannin perceived?

• A. On the lips
• B. Tip of the tongue
• C. Sides and top
• D. Near the back, roof of the mouth and on the teeth

Answer: (D)

Tannin perception is a tactile sensation, known as astringency, not a basic taste. It happens when tannins bind with saliva and proteins in the mouth, creating a drying, puckering feel. This effect is felt most strongly on surfaces where the mouth meets and rubs together—especially near the back of the mouth, along the palate (the roof of the mouth), and around the teeth. That’s why the description pointing to the back of the mouth, the roof, and the teeth best matches how tannin is experienced. The tip of the tongue or lips are less the sites of this pronounced sensation, and while you can notice some effect elsewhere, the strongest perception is in that back-palate/teeth region.