I used 7 Up, and even then I still agree with Myxo, especially at the top. It actually got better moving down as the lime came through more and more. I feel like making it in the more typical Mojito fashion of lime juice, a little sugar, more thorough churning would make it way better.

As an American I had to do a lot of research to figure out what sort of "lemonade" would work best for this drink, since the "lemonade" called for is specifically the carbonated UK variety. Lemon-lime soda seemed like it would be far too sweet and insufficiently lemony, so I tried Sanpellegrino Limonata. The drink was far too sour and the mint tasted very odd underneath all the citrus. Any suggestions for something commonly available in the US?