As long as no contaminants are allowed into the mix, you can let the wine stay in the fermenting jug until you are ready to drink it !
The alcohol content will vary with the temperature during fermentation and also the amount of sugar that is converted (Depends on how much you add and how long it successfully ferments)
A hydrometer is a cheap piece of equipment to measure this if you need an accurate number. I have had batches of wine that were quite potent over a 80 degree summer fermenting.
As long as no contaminants are allowed into the mix, you can let the wine stay in the fermenting jug until you are ready to drink it !
The alcohol content will vary with the temperature during fermentation and also the amount of sugar that is converted (Depends on how much you add and how long it successfully ferments)
A hydrometer is a cheap piece of equipment to measure this if you need an accurate number. I have had batches of wine that were quite potent over a 80 degree summer fermenting.