glass bottles
Also use the smallest bottles you can to reduce oxidisation (we had these concertina plastic bottles that you could reduce the volume of, not sure if they're still a thing.)
concertina plastic bottles
sounded like a good idea at first, but were a nightmare to clean
@salad started
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Also use the smallest bottles you can to reduce oxidisation (we had these concertina plastic bottles that you could reduce the volume of, not sure if they're still a thing.)