``Wine in a paper cup tastes different than wine in a crystal glass.’’ This is not just a matter of mood. In fact, the shape of a wine glass is an important tool that physically changes the taste of wine from the perspective of fluid dynamics and taste physiology.

This time, we will explain the scientific mechanism behind why the taste changes just by changing the glass.

[Reason 1] Space in the bowl that allows the scent to stay The bulging part of the glass is called the “bowl.” The aroma of wine is composed of volatile components, and the size of the bowl determines how this aroma develops. For example, a large, round, fishbowl-like glass called a Burgundy-shaped glass has a large surface area exposed to air, allowing the aroma to evaporate all at once. The constricted spout traps the aroma within the glass, allowing you to experience an explosion of gorgeous aromas when you bring your nose close to it.

[Reason 2] The angle of the drinking spout changes the position of the tongue The human tongue has a structure that allows us to perceive sweetness at the tip, sourness at the sides, and bitterness at the back. The curve and diameter of the glass rim changes the angle at which you tilt your face and controls which part of your tongue the wine touches first. Vertical Bordeaux-shaped glasses are suitable for drinking wine with strong astringency (tannins), but this is because the wine’s shape allows the wine to flow directly to the back of the tongue, making it difficult to feel excessive astringency and emphasizing the fruit flavor.

[Reason 3] Fluid temperature change The thinness of the glass material and the length of the stem are also important. Squeezing the stem prevents body heat from being transferred to the wine and maintains the proper temperature. The reason why chilled white wine glasses are smaller than red wine glasses is because they are designed to allow the glass to be drunk before the temperature rises.

Conclusion: Choosing to have my own glass If you feel like the wine you drink at home doesn’t taste good, try buying a decent glass for around 3,000 yen before upgrading your wine list. It would be perfect if you had three glasses: a Bordeaux-shaped (vertical)'', a Burgundy-shaped (round)’’, and a ``white wine (small)’’, but just getting one of the types of glasses you often drink will make your usual wine taste dramatically better.