This is a full wine-making recipe and, done well, can produce a red wine good enough to compete with many supermarket wines. Occasionally you will produce something truly exquisite. Just like grapes, elderberries can differ year on year. Some years every tree seems to be weighed down with massive clusters of plump, juicy fruits that all go ripe at the same time. Other years are leaner but elder trees are so abundant you should find enough berries for this recipe.