1. Plastic bottles lose fizz quicker.
Plastic is much more CO2-permeable than glass and aluminum, according to a Reader’s Digest article, so the carbon dioxide (fizz) will leak out of a plastic bottle much faster than a glass bottle or can.
2. Chemicals in the bottle give the soda a plastic-y taste.
Plastic bottles also have an acetaldehyde lining which is designed to stop interactions but also transfers into the flavor of the drink, according to Australia’s No. 1 news site.
3. Glass changes the flavor less than plastic or aluminum.
As the least chemically reactive of our three materials, glass doesn’t alter taste as much—so if you want to enjoy Coke the way it’s meant to be enjoyed, go for glass.
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