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
Irish whiskey the style depending on the type of grain used and the distillation process. Traditionally, Irish whiskey was produced in pot stills. Irish whiskeys made in a pot still fall into two categories. Whiskeys made entirely from malted barley distilled in a pot still within a single distillery are referred to as single malt whiskeys, a style also very commonly associated with Scotch whisky. These may be double or triple distilled. Single pot still whiskey is made from a mixture of malted and unmalted barley completely distilled in a pot still within a single distillery. This differs from single malt whiskey