When drinking red wine, it is necessary to hold the high cup with three fingers, or someone can hold the cup foot simply. However, it is important to take the wine cup without holding the belly of the cup with the palm, because the temperature on the hand will destroy the taste of the wine in the cup.
Brandy's cup is the opposite, because the short foot is to let people hold the wine cup with the palm. With the help of the temperature on the palm, the aroma of brandy can be better volatilized.
When toast, hold the cup foot tightly with your thumb, ring finger and small finger, and hold the middle finger against the cup foot. Gently place your finger on the connection between the cup foot and the wine cup. Stretch your fingers as far as possible to show a beautiful posture.
As for the cocktail cup is conical, I think that is because besides drinking, it also depends on the layered color of the wine. The temperature on the hand may damage the proportion of different wines. Therefore, to make the high foot, the slender body of the champagne glass is used for bubble.