Therefore, through the guidance of the shape of the cup body, wine can flow into the appropriate taste area of the tongue (the tongue has four different taste areas, the tip of the tongue is most sensitive to sweet taste, the back of the tongue is most sensitive to bitter taste, and the inside and outside of the tongue are most sensitive to acid and salt respectively), thus determining the final presentation of wine structure and flavor.

The difference and influence of glasses with different shapes and radians on the aroma and taste of liquor are often amazing. Generally speaking, grape varieties are different from wines and producing areas, and aroma, fruit flavor, acidity, tannin and alcohol are also different from each other. Although the wine cup will not change the essence of wine, however, the shape of the wine cup can determine the flow direction, smell, quality and intensity of wine, thus affecting the aroma, taste, balance and aftertaste of wine.