Put the elderberries with stems and the chopped apples in a saucepan. Squeeze the orange and lemons. Also add the juice, chopped fruit peels and the cinnamon stick to the saucepan. Pour approx. 1.4 liters of water, bring to the boil, cover and simmer for approx. 1 hour until the apples have crumbled.
Then pass the entire mixture through a sieve and return it to the pot. Sprinkle in the sugar and stir until it has dissolved. Cook until the jam starts to gel. Then skim, fill into glasses and seal airtight.