Step 1.
- In a shaker, combine the dark rum, fresh lime juice, orange juice, and grenadine.
Step 2.
- Fill the shaker with ice and shake well until chilled.
Step 3.
- Strain the mixture into a Collins glass filled with ice.
Step 4.
- Top off with soda water and gently stir to combine.
Step 5.
- Garnish with an orange slice and a cherry.