I was a little wary after the previous reviewer said it was weak, but I tend to water flavoured drinks down anyway so I'd thought I'd give it a whirl. I like that it was unsweetened and had no added muck. I got the elderflower flavour as I love elderflowers, and I measured the amounts very carefully. It was almost tasteless. After double the amount there was a slight tang. I ended up putting in four times the amount before I had anything like a 'flavour' and even then it wasn't elderflower - more of a citrusy taste (it has citric acid in it). I'll stick to my usual tricks of either taking cordial with me (if I particularly want elderflower), or taking along a Sunita lemon or lime (organic lemon/lime in a little squeezy lemon shaped bottle) - it has a better citrus flavour at a fraction of the cost.