In a large glass or small pitcher add mint leaves, sugar, and lime juice. Muddle together to release the mint flavor. Add berries and lightly muddle (you don't want to completely crush them, just enough to release the flavors). Add club soda and rum, stir to combine.

Fill 2 small/cocktail glasses with ice, pour mojito over the ice in each cup and serve immediately garnished with lime and mint leaves (optional).