Whether a pure brandy snifter or a variant, these are used most commonly for barley wines, eisbocks and imperial stouts. They are stemmed and footed, bulbous at the bottom and narrowing all the way to the top. Because barley wines often have little head formation, the narrow mouth is fine as far as that goes, but still inhibits aroma a little bit, the tradeoff being the appearance of elegance. Many snifter variants made for beers have wider-than-average mouths for this reason.
Appropriate for these styles:
American Strong Ale
Baltic Porter
Barley Wine
Dunkler Bock
English Strong Ale
Foreign Stout
Imperial IPA
Imperial Porter
Imperial Stout
Old Ale
Sour Red/Brown
Sour/Wild Ale