750ML BOTTLE
Straight whiskey is a distinctly different product from blended whiskey. Most premium-category brands of American whiskey are straight whiskey, while the economy category is primarily blended whiskey.
Straight whiskey, as defined in United States law, is whiskey that is distilled from a fermented (malted or unmalted) cereal grain mash to a concentration not exceeding 80% alcohol by volume (abv) and aged in new charred oak barrels for at least two years at a concentration not exceeding 62.5% at the start of the aging process.
The only allowed modifications to straight whiskey prior to its bottling consist of batching whiskey from different barrels (and sometimes from different distilleries, although only from within the same state), chill filtering the whiskey, and adding water to reduce proof while retaining at least a 40% abv concentration.
However, straight whiskey is also an important component of American blended whiskey. Blended whiskey made in the United States must contain at least 20% straight whiskey. The remaining portion is higher-proof spirit, often unaged neutral grain spirits, which are less expensive to produce.