Checking on the web I came across some great sounding recipes.
from This Dorset
2kg elderberry bunches
100g sugar (per 100ml strained juice)
5 cloves (per 100ml strained juice)
Wash the fruit then add to a large saucepan.
Cover with cold water, bring to a boil then reduce to a simmer and cook for about 25 minutes. During the final 10 minutes of boiling mash the fruit with a masher.
Line a colander with muslin and pour in the fruit mix, pushing down with a wooden spoon to extract as much juice as possible.
Measure the volume of liquid then pour into a clean saucepan along with 100g sugar to every 100ml juice and 5 cloves to every 100ml liquid. Bring mixture to the boil and keep boiling for 10 minutes. Remove the cloves with a metal tea strainer then pour the cordial into sterilised bottles. Store in a cool, dark, place.
elderberry jelly from Simply Recipes.