Aqua Libra built their name on this one. The cucumber, mint and lime combination is their flagship, and it's easy to see why: the three ingredients work together rather than competing, with mint providing the herbal backbone and lime doing the citrus lifting. Cucumber keeps things grounded rather than sharp. Made with filtered UK water and natural flavourings, no sugar, no artificial sweeteners. The carbonation is gentle enough that it doesn't fight the flavours. It's the sort of thing that fills the gap when you want something with a bit of character but aren't after juice or a soft drink.