@heatherd I generally plan for 6 # minimum per gallon of fruit but there's another
very important factor - flavor. No flavor no wine, why bother? I cancelled at least 3 wines last year for lack of flavor and I was definitely disappointed.
It breaks my heart that I've only made plum wine once and it's because I haven't had a delicious plum in a couple years. Last year I was gifted with 8#s of plums, some flavor but sub-par. I wanted a plum wine, darn it, so I supplemented with a lb of prunes. Decided to go with a dessert wine, step feeding, finished just shy of 18%. Bottled last week, delicious, and it tasted like Fu-Ki plum wine that I drank A LOT of in the 90's.
Always looking for a good plum!