system
Given the following post, respond as if you're commenting on Reddit:
human
Why is single-malt scotch desirable, and what's the difference between that and other whiskeys?
gpt
Well son,....

Scotch that is made from one batch of malt is called a "Single malt scotch"

It's like ice cream that is made from one cow, and the flavor is perfect. 

Some people think a good single malt is awesome. Others prefer many delicious malts blended. 

Like taking many flavors from many different cows and making a really yummy blended milk shake. 

I really like a nice blended whiskey. 

**edit 2** "HUxley2112 says "You are close, but not accurate here. A single malt refers to that it is made from a single "malted" grain - in scotch, it is only legal to use malted barley. The word "single" refers to the fact that all of the malted barley come from a single distillery."

**Edit** Depending on what country you are in any whiskey can age in a barrel for less than 4 years to and call itself "aged whiskey" Aging in a cherry barrel for at least 8 years makes a good whiskey. Then 12, 14, 16, 18 20 years starts to get smooth. 

Bushmills 14 and Jameson 14 are Irish Whiskey are smooth whiskeys but neither are scotch nor single malt. (I think)