Prepare the mango
Peel and cut fresh mango into chunks, or thaw frozen mango slightly so it blends easily.
Make the simple syrup
In a small pot, heat sugar and water over medium heat until sugar dissolves. Let it cool completely.
Blend everything
Add mango chunks, cooled syrup, lime juice, and salt to a blender. Blend until smooth and silky.
Chill the puree
Pour the mango mixture into a bowl, cover, and refrigerate for at least 2 hours.
Freeze the sorbet
With ice cream maker: Churn according to your machine’s instructions, then freeze for 2–3 hours.
Without ice cream maker: Pour into a shallow dish, freeze for 1 hour, stir with a fork, and repeat every 30 minutes until firm.
Serve and enjoy
Scoop into bowls or glasses, garnish with mint or fresh fruit if you like.