Intent Cordial

Well, today we were hoping to make lemon cordial. Not strictly seasonal, but we hoped that the experience would prime us for things like elderflower and nettle later in the year. Unfortunately, we need citric acid for that (for the "preservation" part) and there's none to be found in the shops hereabout. I wish there were proper chemists still.
Nomatter, because I've bought some on the internet, which is not how I'd prefer matters, but a necessary evil.