Vintners Best Black Raspberry Fruit Wine Base. This is an all natural fruit wine base made with real fruit juice, and crafted from the same formulations used by commercial wineries. This 1 gallon of wine base makes five gallons of fruit wine at 10% ABV. It is easy and convenient to make, requiring no PH adjustments and no acid adjustments. Simply dilute one gallon of wine base with four gallons of clean water, pitch yeast, and stir.