Brandy is a liquor produced by distilling wine. Brandy generally contains 35–60% alcohol by volume (70–120 US proof) and is typically consumed as an after-dinner digestif. Some brandies are aged in wooden casks. Others are coloured with caramel colouring to imitate the effect of aging, and some are produced using a combination of both aging and colouring. Varieties of wine brandy can be found across the winemaking world. Among the most renowned are Cognac and Armagnac from southwestern France.
Traditionally is served at room temperature straight up from a snifter, a wine glass or a tulip glass. When drunk at room temperature, it is often slightly warmed by holding the glass cupped in the palm or by gentle heating. Excessive heating may cause the alcohol vapour to become too strong, causing its aroma to become overpowering. Brandy drinkers who like it warmed may ask for the glass to be heated before it is poured. – By Wikipédia