Making Ice Cream At Home

Some friends made ice cream at home yesterday. It was really good and made me wonder what the science behind making ice cream was… Why did it involve salt? So after a little research, here are two good articles on the chemical process and the uses of different types of salt:

Explains the salt chemistry behind the ice cream making process:
From Chemistry.about.com

This article explains why some salts (like epsom) doesn’t work (it has to do with the range where it can lower the melting point of ice in below freezing conditions):
Sciences360.com