I have a can of San Pellegrino 'Pompelmo' soda on my desk right now. YUM! Nice and tart like proper grapefruit, not sweet like Minute Maid type grapefruit, mixed with sparking water (it says it is 16% grapefruit juice) and whilst there is sugar added, it retains that nice refreshing taste. Have had the lemon and orange varieties lots, but yesterday found this one, and 'blood orange' flavours in whole foods. I rarely drink 'leaded' soft drinks, as I don't need the extra calories, but I shall make an exception once in a while for this one I think!