You have opened a can with a soft drink, but notice relatively quickly that you can never pour all the carbon dioxide into yourself at once?
Then you can either let the carbon dioxide escape until the cola tastes boring; or you can use a freshness bag and keep the cola fresh.
- use a bag for keeping food fresh (preferably with zip fastener)
- put the open can into the bag and seal it
- put the bag in the fridge
and the carbon dioxide does not escape and your refreshing drink remains refreshing!