We’ve begun to collect blueberries and need to know how many are needed for to make a bottle of wine?

We seem to have an unlimited supply, as long as the season holds of course and thought that after the pie making and freezing we should try to make some wine or spirit from them as well but have no idea how many it takes to create a bottle or two, or maybe a few! Regular size bottles are 750 mil. so how many do we need to get a gallon (4 litre aprox.) of juice?

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