This is the basic recipe for red fruit wines. It will work with blackberries, blueberries, plums, or any other dark fruit or berry. All these wines age very well, and do well with added oak. If you make them correctly and age them a few years, you can shock your wine snob friends. Serve it first, and tell them what it is later.
Note that prep time is only for that initial first day's work. Elderberry wine takes a long time to mature.