About Bourbon

• Bourbon is an American aged whiskey named for Bourbon County, Kentucky — a distilled beverage that has been made since the late 1700s.
  
  

• Distillation process

  The typical grain mixture for bourbon is 70% corn — with the remainder being wheat and/or rye, and malted barley.

  After aging, bourbon is diluted with water and bottled. Bottling proof for whiskey must be at least 80 proof (40% abv) and most whiskey is sold at 80 proof. Other common proofs are 86, 90, 94, 100 and 107, and whiskeys of up to 142 proof have been sold. Some higher proof bottlings are "barrel proof."

  Bourbon may be made anywhere in US where it is legal to distil spirits. Legitimate production is not restricted to Kentucky, although currently all but a few brands are made there, and the drink is associated strongly with that Commonwealth. Illinois once produced nearly as much bourbon whiskey as Kentucky, and bourbon continues to be made in Virginia. In the past bourbon has been made in Pennsylvania, Indiana, Ohio, Tennessee, Missouri and Kansas.
  
  This information and more found at Wikipedia