Straight whiskey prior to its bottling. American straight whiskey must be aged in charred new oak barrels and must be put into the barrels for aging at a concentration not exceeding 62.5% abv. When bottled, only water to reduce proof may be added. This is the definition established for production of American whiskey for consumption within the United States as per the U.S federal "Standards of Identity for Distilled Spirits". (The regulations do not necessarily apply to American whiskey made for export.) Alternatively, straight can also refer to a way of requesting and/or serving a drink of whiskey—pouring the spirit without any
Blended whiskey pot still, malt, and grain whiskey categories. Its production usually includes Irish grain whiskey that is produced from a distillate that "is much less intense in flavor when compared to pot still distillates ... at a strength of c. 94.5% vol." Under Scotch whisky regulations, "'Blended Malt Scotch Whisky' means a blend of two or more single malt Scotch whiskies that have been distilled at more than one distillery; 'Blended Grain Scotch Whisky' means a blend of two or more single grain Scotch whiskies that have been distilled at more than one distillery; and 'Blended Scotch Whisky' means a blend