White wine does not need to be oxidized like red wine. Since white wine does not have tannins in red wine, the taste of white wine will appear sweeter and lighter. This kind of flavor is best enjoyed after cooling down. The temperature of about 7 degrees Celsius is just right. Lower temperature will reduce the aroma and taste of wine, therefore, the cup opening of white wine cup will be smaller and narrower to reduce the degree of wine contact with air. Since the chilled temperature of white wine must be ensured, the glass needs a higher and thicker glass to be convenient for the tasting to hold.