Shape: They feature a short stem with a wide, rounded bowl that tapers to a narrower opening at the top.
Function: This design is intentional: the wide surface area of the liquid allows the spirit's aromas to evaporate, while the narrow top traps and concentrates those aromas for the drinker to appreciate.
Holding Technique: They are held by the bowl, allowing the warmth from your hand to gently raise the temperature of the spirit, which further enhances its fragrance and flavour profile.
Serving: These glasses are primarily used for serving aged brown liquors such as brandy, cognac, bourbon, and aged rums.