The second kind is a professional whisky cup, which has a big belly and a small waist, and there is a little distance between the bottom and the mouth of the cup, so that the aroma can be emitted from the mouth of the cup.
If you don't have a professional cup, a champagne cup is fine. It has a certain depth, a big belly and a small mouth.
When tasting wine, some greasy and heavy-tasting dishes, such as brine, bacon or starchy food, can stick the aroma of wine in the throat and have a longer aftertaste.
The shape of the wine glass will have an impact on the wine tasting experience. The special whisky glass is called "Snifter", which is a bit like a grape wine glass, but it has a shorter stem, a larger belly and a narrower mouth. This shape is beneficial to fully shake the cup and concentrate the aroma on the mouth of the cup. Whisky distilleries or restaurants usually provide the right glasses. If you drink whisky at home and don't have a special glass, you can temporarily use a grape glass instead.