There are no surprises here--this is a classic mojito: minty, fresh, limey and spiked with rum! Turbinado sugar adds depth to the plain spiked seltzer so it's worth adding it to your pantry.
Muddle mint leaves, lime juice and turbinado sugar in a cocktail shaker until sugar is dissolved. Add limeade and rum to cocktail shaker and shake vigorously for 10 seconds. Strain over a glass of ice. Top with plain spiked seltzer; garnish with mint leaves.