From the selection principle of wine glass:

Principle one: Material. The material of the wine glass should be smooth and transparent, and the material should be cold and hard to avoid temperature interference with the wine quality. The first step of wine tasting is to check the color of the wine. Transparency can help us understand the wine grape variety and wine age and other information. Commonly used wine glasses for glass or crystal material, glass is relatively heavy, and the visual effect is not ideal, but low price durable; For formal dinners or clubs, people who pursue quality will choose crystal cups, which are clearer, thin, crisp, and fragrant. High-quality crystals often contain lead, and gradually other metals are used to replace more expensive crystal cups with lead. However, replacing lead with other metals has nothing to do with health factors, but simply because such cups are brighter after scrubbing and have a higher refractive index. It's more transparent and beautiful, and helps the wine breathe better.

Principle two: Size. Normal wine glass size refers to the size of the stomach, which decides to shake the glass without spilling the wine, because shaking helps release the aroma of the wine. Of course, depending on the way of wine tasting, we need to choose different sizes of the body to ensure the taste of the body.

Principle 3: Goblets. One of the reasons for choosing a goblet is to avoid fingerprints on the belly that can interfere with the body color of the wine. Also, since wine is extremely sensitive to temperature, pinching the foot or bottom of the goblet prevents body heat from affecting the wine temperature, thereby preserving the taste of the wine.

Principle four: The shape of the belly. Standard wine glasses are tapered, that is, the opening is smaller than the belly, because this shape is conducive to the condensation of wine aroma, through the different body lines, can limit the contact degree of liquid and air circulation, to maximize the preservation of the aroma and taste of the wine body.