Neither Glencairn Nor Tumbler: The Glass That Brings Out The Best In American Whiskey - Tasting Table

"The wide mouth of the Bourbon Trail glass is especially relevant to this because it allows more circulation of air in the glass, allowing the vapors of high-proof whiskeys to dissipate for the consumer to be able to experience more depth of aromas of what's in their glass."

"It's important to note that many American whiskeys are often available at significantly higher proof than other whiskey-producing countries. When a spirit is higher proof, it means you end up with more ethanol in your glass. As the ethanol evaporates into the air, and alcohol does this with ease, the vapors can hit your nose quickly and overwhelm your senses when you take a sip."

"I personally prefer a Glencairn to sip my whiskeys; however, I do recommend lightly blowing into the glass before diving into the aroma. As the Glencairn's mouth is not as wide as the Bourbon Trail glass, blowing the spirit gently will help disperse some of the ethanol vapors before it reaches your nose."

American whiskeys typically have higher proof levels than whiskeys from other countries, resulting in more ethanol that evaporates quickly and can overwhelm the senses. The shape of the glass significantly impacts the tasting experience. The Bourbon Trail glass, with its wide mouth, allows superior air circulation that disperses ethanol vapors while preserving aromatic complexity. While Glencairn glasses work acceptably for whiskey, blowing gently into the glass before sipping helps disperse excess ethanol vapors. Traditional tumblers are less ideal because they don't provide optimal vapor dissipation or aroma concentration for high-proof American whiskeys.

Read at Tasting Table