example: credicts http://www.wikihow.com/Chill-a-Drink-Quickly

1. 1. Measure the temperature of the drink. This step is optional; once you open a can, this method won't be as effective. If this is your first time trying it, though, it will be interesting to record how drastically the temperature can change
2. 
   2. Fill a bowl (the thicker and/or more insulated the better) with water and add ice to it. Add as much ice to the water as you can, but not so much that it prevents the entire beverage container from being submerged into the water. A 50/50 mix of ice and water is a good rule of thumb.
3. 3
   
   
   Add table salt to the ice. A small handful should do. The salt will dissociate into it's constituent sodium and chloride ions. The water molecules, being polar, will orient themselves accordingly. This is work, and work requires energy which comes from thermal energy in the water, thus reducing the ambient temperature further.
4. 4
   
   Place your drinks in the ice water solution and rapidly stirthem all around. By stirring, you're using forced convection to speed the transfer of heat out of your drink and into the ice water solution.
5. 5
   
   
   Wait two minutes. Measure the temperature of one of the drinks - the temperature should have fallen dramatically in a very short time. If it needs more time chilling, stir the remaining drinks in the salted ice water for another minute or two.
6. 6
   
   Enjoy your cold drink. It should now be about the perfect temperature to quench your thirst.