How to make
Prepare large 12 1/2 cups (3 L) jars - wash and dry them.
Arrange a layer of elder fruits, about 1 1/2″ (3.5 cm) thick, then that much sugar (it's good to have your sugar layer just a bit thicker). Then repeat, arrange another 1 1/2″ (3.5 cm) of fruits and sugar once again.
Continue until you've filled the jars. Finish off with a thicker layer of sugar.
It's important not to fill them up all the way because the mixture will bubble over the course of the coming days. Cover the necks of the jars with gauze, then leave them in a dark area. Stir them with a wooden spoon once a day. They need to sit that way for 40 days.
Once the 40 days are up, strain the mixture, distribute the resulting juice into glass bottles. Store them in the fridge.
You can use the seeds as well - eat 1 tbsp of them daily. You can add them to smoothies or creams.