American whiskey vary between those produced for consumption within the United States and those exported abroad. The production and labeling of American whiskey is governed by Title 27 of the U.S. Code of Federal Regulations. Outside of the United States, various other countries recognize certain types of American whiskey, such as bourbon and Tennessee whiskey, as indigenous products of the United States that must be produced (although not necessarily bottled) in the United States. When sold in another country, American whiskey may also be required to conform to local product requirements that apply to whiskey in general when sold in that country.
Rye whiskey be further designated as "straight", as in "straight rye whiskey". Rye whiskey was historically the prevalent whiskey in the northeastern states, especially Pennsylvania and Maryland. Pittsburgh was the center of rye whiskey production in the late 1700s and early 1800s. By 1808, Allegheny County farmers were selling one half barrel for each man, woman and child in the country. By the 1880s, Joseph F. Sinnott's distillery, Moore and Sinnott, located in Monongahela was the single largest producer of rye whiskey, with a capacity of 30,000 barrels a year. Rye whiskey largely disappeared after Prohibition. A few brands, such as Old