Best of luck brewing, Garrett. As others have said, a high ABV brew is possibly your best bet.
I've been brewing for a long time, and a few years ago, an old friend stopped by with half of a six-pack of extract-based imperial stout that I had brewed and given him as a Christmas present - 18 years previously! He found it as he was cleaning out a closet. (I couldn't believe it, but the musty records I had of that brew could not be denied) Since I was surrounded by a hoard of BJCP judges at the time, we opened some and evaluated. Color was still fairly dark and clear, slight carbonation (still!), and strong overtones of prunes (not 'dark fruits', that's too polite, it was definitely prunes).
I can't say that an 18 year old RIS was the best beer I've ever had, but it was better than I would ever have expected.