2 (1 gram) packets granular sucralose sweetener (such as Splenda®)
1 lime, juiced
2 fluid ounces white rum (such as Cruzan®)
12 ice cubes
Mix sweetener with lime juice and white rum in a small bowl until sweetener has dissolved. Place ice cubes into a blender and pour rum mixture over ice; blend until slushy, about 2 minutes. Pour into a glass.