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Stopping the condensation in the first place, which then keeps the aluminum can fairly cold, and the beer inside colder. "Probably the most important thing a beer koozie does is not simply insulate the can, but keep condensation from forming on the outside of it," Durran told the University of Washington.
Also know, what is the purpose of a beer koozie?
Koozies are used to insulate a chilled beverage from warming by warm air or sunlight. Using a koozie can reduce the rate a drink warms in the sun by up to 50%.
In this manner, how do you keep beer bottles cold?
Method 1 Using Water, Ice, and Snow
- Cool beers with cold water. This is one of the fastest ways to lower the temperature of a beverage, and you can do it indoors or outdoors.
- Give the beer a cold "bath".
- Add table salt to the ice.
- Run the faucet.
- Submerge the beers in a body of water.
- Stick your beers in the snow.
Initial Thoughts About Cans vs. Also, cans are completely airtight and keep out all light, so the beer never gets tainted. Those who prefer bottled beer say the bottle keeps the beer colder longer, and they don't drink canned beer because the aluminum imparts a metallic taste.