Always store 2 litre bottles of soda, once opened, on their sides in the fridge. As long as there is enough soda in the bottle to cover the cap, the soda will keep its fizz.
By Jo from Riverside, RI
This page contains the following solutions.
We don't drink soda quickly in our house so I squeeze out the air from my soda bottles then seal them to reduce air inside and keep them from going flat!
To keep canned soda after opening, place a small piece of plastic wrap on the can with an elastic band. It's just like a top.
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Instead of throwing away half a can of soda or leaving it to become decarbonized, place a balled up piece of foil in the drinking hole sealing off the majority, if not all, of the can.
