Tah-dah...

...the finished article! I'm quite impressed - the colour/smell is gorgeous - although it is rather thick (which is why it's taking ages to settle). Because I'd got a mixture of soft, stoned and hard fruit I used 400ml of water but next time I think I'll use a little more depending on how much soft fruit there is. Anyway, I used the crab apples, plums, brambles, sloes, haw-berries and elderberries (quantities in descending order) to make this cordial. I'll let you know how it tastes once it's cooled down.

Edited to add: Tastes gorgeous :-)