To make 5L in a Tesco's 5L mineral water bottle
1.5L Pressed Red grape juice
1L Other red juice (Cranberry and Blackberry)
700g - 800g sugar (1.5lb)
1 tsp nutrient
1/2 tsp tannin (or cup of strong tea)
1 tsp pectolase (pectic enzyme)
1 tsp glycerine (cough bottle from Boots)
1 tsp yeast (I used a satchet of Bourdeau Yeast)
Boil a litre or so of water and add sugar
Pour syrup into plastic bottle and allow to cool
Add other ingredients but be sure temp is below 40C before adding yeast and nutrient.
For an air lock drill 8mm hole in lid and push in bubbler
Shake well
After four or five days the fermenting should have calmed down and you can top up to near the top with cool water.
Let it ferment out until the fizzing stops (probably two weeks or so in total)
Rack it into another bottle with a crushed campton tablet and 1/2 tsp Potassium Sorbate
Shake well 3 or 4 times over a couple of days to get rid of carbon dioxide gas
Add finings and leave for a few days to clear (with water bottles you will get sediment in the wrinkles of the bottle. shake gently to disturb it and leave another day or two.
Sweeten to taste with grape juice or sugar
Bottle and drink :
All chemicals and bubblers are available from local homebrew shops or online.
This is lovely straight away but if you can leave it for a few months it gets even better.