On the occasion of needing to prune my mint plant (which is, amazingly, STILL ALIVE):
Muddle (or use a mortar & pestle) the mint and sugar together. Separate the mint/sugar mixture into two low ball glasses. Squeeze half a lime into each glass and mix. Add ice cubes, and then pour tonic water over all of it. Stir and garnish with a strawberry (if you happen to have one, as I did).
There. A mojito you can feel OK drinking at 10 am.