Elderflower Cordial

(My lovely neighbor gave me the recipe as well as a container of tartaric acid.)

Ingredients:
24 elderflower heads
4 oranges
1 lemon
2 ounces tartaric acid
3 pints cold water
3 lbs sugar

Place flowers in a bowl, slice fruit and add with all other ingredients. Stir until sugar has dissolved. Leave for 48 hours. Sieve and strain through a muslin. Store in bottles or in plastic tubs in the freezer. Dilute to taste.

See, it all started when my neighbor had American guests at her house over the holidays. One of the Americans was very excited to meet my spouse "the Lord of Sound" since he (my spouse) is basically a loudspeaker genius. So, on Christmas eve, we came over, ate various British treats and goodies including elderflower cordial. She said she'd tell me how to make it when the time came to make it and now is the time.