20 Elderflower heads in full flower. Cut away as much green as possible.
Make a syrup from 2 kg sugar and 1 L of boiling water.
Add washed flowers, 75 g citric acid, grated rinds of 2 lemons and lemons sliced.
Put into a plastic container, stir well and cover with a cloth.
Leave for at least 24 hours.
Strain and bottle, then cork firmly.
Will keep for 6 months.