'Tis true - I read it somewhere and thought I'd give it a go - well I'm gobsmacked, it actually works! Diet lemonade, a slug of sugar-free raspberry & peach 'juice' drink and a dash of balsamic vinegar = a good-enough version of Pimms and zero syns - my world is a happy place 
(Still can't get the curry powder/yoghurt = coronation chicken thing to work though)