I made some cherry wine a couple months ago from my nieces cherry tree (produces nice tart cherries for wine and pies and stuff) and some cherry/white wine juice and various things.
I used the EC1118 or whatever it's called yeast that goes up to 18% usually, but through staggering my sugar and such I managed to push it to ~21% alcohol. Tastes like cough medicine at the moment, but I'm not really planning on trying it for another year or two at least.
I left 2/3rds of the cherries in the primary for about a week, and I've had the rest of them sitting in secondary for about 6 weeks now. I'm going to rack it today if I can find my siphoning tube.
Anyway, the point of all of this is that since it's from my nieces cherry tree and she's only 4, do you think a bottle will keep until she's 21? I've heard that for most fruit wines 8 years is the max age that you should really keep them for. I'm planning on staying with the hobby for the rest of my life, but it'd be nice to give her a super old bottle if it wouldn't taste any worse off then a 10 or 5 year old version.
cherries tend to be tannic like grapes from what I understand, and this is highly alcoholic, so I was thinking in this case the wine might keep well.