Prepare the mango puree: Add diced mangoes to the blender. Blend until smooth.
Strain if you prefer a pulp-free drink.
Mix the cocktail: In a cocktail shaker, combine 6 oz of mango puree, white rum, pineapple juice, orange juice, lime juice, and simple syrup.
Shake well: Add ice to the shaker and shake vigorously for 15-20 seconds until chilled.
Serve: Fill hurricane glasses with ice. Pour the cocktail mixture over ice.
Garnish: Float dark rum on top if desired. Garnish with mango slices and lime wedges.
Add a maraschino cherry for a classic tropical touch.
For a non-alcoholic version, replace rum with additional fruit juice or coconut water.