Bottled soda, especially in plastic bottles has an incredibly short shelf life. People don’t notice or pay attention to it. Canned soda has an expiration of about a year or two. Bottled in plastic bottles is about 2 months.
Part of it is that the plastic bottle is made out of PET (polyethylene terephthalate.) PET is slightly porous to CO2 gas, and overtime it will leak out. Sunlight or the UV light from indoor lighting will also degrade soda in plastic and glass bottles. Glass is just better for blocking UV light.
How the hell are so many top level comments leaving the main component out?!
Mouth feel.
Taste is complicated. It is an amalgamation of pretty much every sense. Smell is a MAJOR contributor, but what is touching your lips ALSO changes taste.
People who are really in to wine will have various wine glasses in their collection which have different metals coating the rim of the glass for this reason.
A metal straw, plastic straw, and paper straw all give a different taste to the beverage you drink.
Pour the soda from a bottle and from a can into similar glasses and run your own blind taste test. See if you actually identify any difference in taste.
Put the bottled soda in an aluminum cup, and the canned soda in a glass container. Their tastes “swap” for you suddenly. Well, probably not entirely, as a more open container means more scent gets to you and more carbonation flies up your nose if it is a fresh pour, so the taste will likely be different from either straight out of the container…
My wife insists that coke in a glass bottle is superior to in a can. I’m partial to fountain myself. But I really like to drink in a glass rather than in the container.
So we did a test. Can, glass bottle and plastic bottle. All into a glass. We did it blind with each giving the test to the other.
Neither of us could tell the difference between the 3.
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