Put the mint sprigs and strawberries, and simple syrup in a cocktail shaker. Muddle well.
Add the rum and lime juice to the shaker and fill with ice. Shake briefly, just to combine, and pour the shaker, including the ice, into a tall cocktail glass.
Top with club soda and garnish with fresh mint to serve.
Recipe by The Taste Edit at https://thetasteedit.com/strawberry-mojito/