_Elderflower Champagne_ 5-6 elderflower heads 2 lemons, sliced 8 pints (4.5 l) boiled water 1 1/2lb (750 g) sugar 2 tablespoons cider vinegar, or 1/2 oz (15 g) citric acid Place flower heads and sliced lemons in a bucket and add the water. Soak for 24-36 hours. Strain through cloth or fine sieve, then add the sugar and vinegar/acid. Stir well until sugar dissolves, then pour into bottles (either Champagne bottles or screw-top bottles left loosely closed for 7-14 days). She says it doesn't keep much longer than 3 months, and she mentions drinking it as soon as 10 days after making it. (_Fruity Passions_, Margaret Vaughan & Mary Hardiman-Jones, BBC Books, 1990)