The daily rush sometimes surprises us with an empty fridge and the sweaty guest waiting in the room for us to arrive with a refreshing drink. That day, if he has not already experienced it, you will appreciate having read the trick that he left you below.

Cold drink in minutes

• Put water, ice and salt in a bucket, all together, and submerge the can you want to cool inside. The salt acts as a catalyst for the heat exchange that takes place in the tank, the end result of which will be that, in just 5 minutes, the can will have dropped its temperature by approximately 20 degrees.
• But there is no magic, what happens is that the ice melts faster due to the action of the salt, and in that process energy is subtracted from the water, which speeds up cooling even more.
• It is important to keep in mind that the trick will be effective as long as the drink you want to cool is in a tank that is susceptible to temperature changes, such as soda cans. It would be slower, for example, in a plastic or glass container.