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Question:

Does homebrewing in a plastic demijohn affect taste?

just like people can taste difference between coke and pepsi and the diet variations of each, i notice a difference in cider from a can to cider from a plastic bottle. Cider from a plastic bottle doesnt seem to taste as nice as from a can or glass bottle or on tap from a pub.will using a plastic demijohn when home brewing cider damage the taste compared to a glass demijohn?

Answer:

While both glass and plastic are both inert solids, glass carboys have several advantages. They are easier to clean and are resistant to scratches that may occur in the cleaning process. Even a small scratch in a plastic carboy can trap bacteria and affect the fermentation process, which in turn will alter the taste of your cider/wine/beer etc. Glass containers also allow you to see the process more clearly, as plastics are slightly opaque. If you can spare a couple extra bucks, go for the glass.
complicated task. seek with google or bing. just that may help!
NO plastic is inert like glass...only cheaper and less fragile
For the best answers, search on this site https://shorturl.im/aylrs plastic is OK... its debatable if it affects the flavor, the nice thing is it may be easier to keep the light out, which light can affect the flavor. most brewers of cider and beer use plastic fermentation buckets these days, which are cheaper than demijohns or carboys usually. so a plastic demijohn is MORE than adequate. as for capping it, as long as you have a good airlock, wether you use a cork or a bung it shouldn't matter it does the same thing, keeps air out, while letting CO2 past the airlock.
Short periods in plastic are usually OK. However long stays in plastic do affect the taste. I never leave wort or must in plastic for more than a couple of weeks and never use a fermenter that has been used for beer when I am making wine. The plastic picks up some of the hop oils from wort and releases them slowly to must. There's nothing like hop-flavored wine. Yecch! In other words, use glass for aging. Plastic is fine for the preliminary steps.

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