Plenty of fruit you say. OK. Take like 50 pounds of berries, crush them, add KMeta and Pectinase overnight. Strain some juice thru a coffee filter until you get enough to measure the specific gravity if you use a hydrometer, or just use a refractometer. Calculate how much sugar you need to add for the percent alchohol you want and stir it in good. Add a Pasteur Red, Montrachet, RC212 or your favorite red wine yeast. After only 3 days strain and press the berries, you will mostly just have seeds, get rid of them and keep the fermentation going. Its a good time to add some oak chips or oakmore powder too. After the SG drops transfer to a secondary and attach air lock. This method helps eliminate one of the major causes of bitter blackberry wine that a lot of people seem to get by not fermenting on the pulp too long. If you did the crushing and pectinase correctly you should mostly have seeds you are getting rid of. In about a year it will have cleared and you can bottle and enjoy a bitter free very berry tasting blackberry wine.
Crackedcork