– elderflower heads – water – lemons – granulated sugar
Pick elderflowers on a dry, sunny day when the blooms are fully open and fragrant. Don’t rinse them—just give them a gentle shake to remove any insects.
Place the elderflowers and sliced lemons in a large bowl or pot. Pour the cold water over them. Cover with a clean cloth and leave to steep in a cool place for 24 hours.
Stir in the sugar and citric acid. Warm the liquid gently—just enough to fully dissolve the sugar. Don’t let it boil.