20 - 30 heads of elderflower (picked dry if possible and on a warm sunny morning)
1.5 kg granulated sugar (you can experiment with using less)
75g citric acid/or tartaric acid if preferred
2 lemons sliced (gin and tonic thickness)
1.5 litres of boiling water
Pull the creamy white flowers off the stems with a fork
Use large heatproof jug or bowl. Put in all the ingredients. Pour on the boiling water and stir until sugar is dissolved.
Cover with a tea towel or some muslin and leave for 24 hours.
Strain and bottle; I use plastic bottles and freeze them. It is very good to keep colds away in winter and makes a refreshing drink for summer days.
Pour a little cordial into a glass and top up with still or fizzy water.