Hello all,
I thought I'd post a data point for those interested in volume of liquid from weight of fruit. I am making blueberry wine from fresh New Jersey blueberries, just in season.
I purchased 3 trays, containing 36 pints plus overage, or about 37 pints total. The total weight of berries was about 30 lbs. I added 2 US gallons (7.57L) of water, plus about 5 lbs of sugar.
After fermenting on the skins for 3 days, the must was first strained of free run liquid, and then the berries pressed in a basket press (3x) to yield a total liquid volume of about 20.8L.
My calculation is this:
Water 7.57L Sugar 1.89L (half US gallon) Blueberry juice 11.34L (about 3 US gallons) ------ TOTAL 20.80L
So there you have it. Roughly 10 lbs (12.3 pts) blueberries per gallon, or
2.65 lbs (3.26 pts) per liter. Just thought someone would be interested. I certainly would have been, before I started making this wine!Regards, Roger Quinta do Placer