> Can some one please tell me the difference in the following drinks:
> Whiskey

The distinction between whisky and whiskey is that whisky is produced in
Scotland, Canada or Japan and whiskey in Ireland or USA. So you choose
the spelling by production country, not your own country.

> Bourbon

Most American whiskey is bourbon, but not all. Bourbon must be produced
from corn (ie. maize) and aged in new oak barrels. It is made mostly in
Kentucky (Kentucky style whiskey), like Jim Beam. The other mainstream
american whisky is Tennessee style whiskey, such as Jack Daniel's.
Bourbon must have mostly corn, but not more than 80%. If it has, then it
is called Corn Whiskey.

> Sour Mash Whiskey

Sour Mash is just a refinement to bourbon production process. Nowadays
all bourbons use it. So practically it means nothing.

> Scotch

Scotch whisky must be produced in Scotland, aged for at least 3 years on
Scottish soil and made from malted barley and other whole grains.


If you want exact definitions with all rules that apply to
Scotch/Bourbon/whatever, see wikipedia.org.