Does the concentration of tannin in red wine increase with temperature?

The concentration of tannins in red wine does not increase with temperature. In fact, the opposite is true.

Here's why:

* Tannins are extracted from the grape skins, seeds, and stems during the winemaking process. This extraction is influenced by several factors, including temperature.

* Higher temperatures can lead to increased tannin extraction. However, this extraction reaches a peak and then plateaus.

* Excessive heat can actually cause tannins to degrade and lose their astringency. This is why wines made with very high temperatures during fermentation can have less pronounced tannins.

So, while higher temperatures initially promote tannin extraction, the overall effect is not necessarily an increase in tannin concentration.

However, temperature does play a role in how tannins are perceived in wine. Warmer temperatures can make tannins seem more pronounced and astringent, while cooler temperatures can make them seem softer and smoother.

Therefore, the perception of tannins in red wine can be influenced by temperature, but the actual concentration of tannins is not directly proportional to temperature.