[header] How to cool beers without a fridge [title] Cool beers with cold water. [step] This is one of the fastest ways to lower the temperature of a beverage, and you can do it indoors or outdoors. Completely submerge the surface of your beer container in cold water; the colder, the better. 
If the water is icy, you should be able to sufficiently cool a beer from room temperature to " party cold " within five minutes. The process might take somewhat longer if you're outdoors, or if the water is warmer.