I picked a bag full of elderflower heads, grated three lemons and then left the whole lot to infuse over night by pouring 2 litres of boiling water over it.
The next day I added the juice of the lemons and added a table spoon of citric acid and a kilo of sugar, I then heated this up in the saucepan until it boiled before adding it to some Kilner bottles that had been sterilised (and warmed) in the oven.
I also made some ice lollies out of the mixture which should be nice and refreshing on a summers day.
I've read that this will only keep a couple of months but I doubt there's much chance of it lasting that long. I'd like to try and pasteurise some cordials in the future so we could keep them a lot longer without freezing them and maybe reduce the number of the ones that we buy. I thought this might last longer than that due to the sugar content. If I see a Berco boiler at a car boot sale it might be worth me trying it, I think you need to heat it at 70 degrees for a few minutes to kill all the bugs.
Blackcurrent cordial next I think! Anyone else been making cordials?