Quick guide to re-racking :
1) Re-racking is when you siphon a brew from one container (demijohn) to another, leaving the sediment/yeast behind
2) You might do this several times for wine, but usually just once or twice. The idea is help the wine purify & "clear" when the fermentation is finishing.
3) At the same time, you'd normally de-gas it. It might have stopped bubbling but it's still fizzy, and it won't clear easily.
Start by siphoning into another clean DJ when the air lock has almost stopped bubbling :
^^care taken to avoid disturbing the sediment…. when I first started, I just used aquarium air line pipe, and always ended up making a mess.
Here's what was left behind :
^^ Now it's time to wash that out, rinsing several times.
Ok now we could just put the airlock in the new DJ, and label it, but as I said the wine is fizzy and needs de-gassing to clear.
So, siphon half of it back into the cleaned first DJ.
Shake the half gallon with your (clean) hand over the top.
It will really fizz up A LOT the first couple of times, let the gas out as you go along. I shake it about 10 times, let it settle, repeat.
Repeat this de-gassing for the other half gallon.
You will never get ALL the fizz out, don't worry, just get most of it.
Siphon the second half back into your first DJ, with the first shaken half. Replace the airlock. Done.
That's it. Clean the other DJ - always rinse them out ASAP after anything's been in them. Saves trouble later.
This wine can now stay in the DJ until whenever, really. I like to bottle mine as soon as it's clear, but if you've got a lot of DJs
and you're going to drink the whole gallon at once, you never need bottle it.