https://www.thehomebrewforum.co.uk/threads/supermarket-juice-wine-how-to-guide-and-recipes.49462/
one of my favorite threads.
heres my take:
you arent going to make really great GRAPE wine from just juice , you need the skins. you have been used to drinking wines made from grapes and you can notice the difference IMO.
but,
find me a delicious smooth highly quafable bottle of blueberry, pineapple, mango, or forest fruit wine. almost impossible. and you wont have a previous image in your mind of what mango wine should taste like. so thats a great target. for me at least.
the above thread has hundreds of fruit juice wines that come out really good.
my favorite is bilberry:
2 liters of bilberry juice:
View attachment 872558
1 liter of white grape juice.
several hundred grams of sugar to bring SG to around 1100
1 cup of very strong black tea for tannin
juice of half of a lemon
tsp of nutrient
tsp pectinase
almost any wine yeast will work.
room temp always works for me.
almost any dark fruit juices will work. but some are tricky. blackberry is too strong and cranberry too sour and pure black cherry can taste like medicine.
sour cherry/ black cherry mix can be VERY good tho.
good luck
this is much better than prison hooch
i use bentonite very late after 1 month on lees. i rack off the lees. i add bentonite which is annoying like a cup of wet slurry clay with chunks. then rack after a few days to a bottling bucket. the wine is very clear then.
keep those lees!!!
simply pouring straight apple juice (and nothing else needed) onto used fruit wine lees makes the best fruit flavored ciders in my opinion.
similar to skeeter pee with lemon juice ( i havent tried this ) which works best with used wine lees.