Hi to all,
Apart from the main demijohn, I usually store extra juice in smaller
demijohns/or bottles.
I use this extra juice to fill up after racking.

Please note that I am a very small wine producer. (70 bottles not
more)

However I never have the exact amount to fill all the container, and
endup with a container
filled with air. Over the fermentation period, this extra juice
ferments to something of much lesser
quality than the main one.

Do you have any suggestions on this? Could I use tetrabrik containers,
where I can remove as much air as I want.

Thanks Fish