Hi, not to be rude but 'suck it and see'. I am getting the impression that using only pure juice from fruit is where I need to be but it aint.
For my apple wine (my missus recons I make over strong flat cider) I use 5lb of apples liquadised and put into a 5ltr pan with just under 1 ltr of water to bring up the volume, then after boiling I add 3 1/2 lb of sugar per gallon. I only make 3 gallons per bucket (25ltr bucket) and I get two and a half demijohns from the mix, squeezing the apples out after the first firmentation can take a few hours but it is well worth the work.
I use 3 1/2 lb of rosehips (about 1 1/2 kilo per gallon) and again 3 1/2 lb sugar. for some reason I add my suger after boiling so the quantity goes up a bit, and I liquidise the heck out of the Rose-hips and boil them for 15 to 20 mins.
I am new to this lark as well all but for about four years, and I have started experimenting because I want new crisp fruty wines for quaffing liberally, for that purpose I have some black currant wine on the go, both with 3 1/2lb of suggar per gallon but I am trying a different approach to see how the flavour goes, one has 2kilo of currants and one has 1kilo, both smell nice both are bubbling away well and the colour is almost indistinguishable from each other at the moment, one is a fraction darker but thats all.
I will leave them to firment as much of the sugar as possible, but I am starting to hear of stopping the firmentation at certain levels of alcohol to make sweeter wines and adding differing kinds of finnings not to only clear the wine but to inhance the flavours. This will be my next step forward possibly trying something like this next year.
Any way, nice to meet you odorf, happy wine making.