I know we weren’t in the hottest place in the country over the weekend but oh boy was it warm. We found a lovely spot at Kinver under a row of shady beech trees, with a family of geese for company.
And as luck would have it, there was also a bush full of elderflowers. I duly helped myself. (10 flower heads)
And added them to a sugar syrup (about 700ml boiling water and 300g sugar left to dissolve and cool) Added some lemons (2) and a tablespoon of citric acid(15g) 
left for 24 hours the strained into bottles.
Diluted with fizzy water (or champagne) bliss.