To know how to cool its drink, is always a good thing in Saigon, especially when the weather is bloody hot. Here’s how to lower very quickly your canned drink in just two minutes. To realize this miracle, you need only three ingredients: water, salt, and ice. Fill a small basin of water, add some ice cubes and put inside your can. Cover the can with more ice and spread on two teaspoons of salt. In two minutes; the temperature will drop of 20°!