Peel the mango and cut into rough chunks, measuring about two cups, then place them into the blender.
Peel the fresh ginger using a spoon or peeler, then grate it finely and add to the blender with the mango.
Pour in the freshly squeezed lime juice and sprinkle in a pinch of salt to enhance the flavors.
Add a cup of ice cubes to the blender for chill and to help achieve a slushy texture.
Secure the lid on the blender, then blend on high until the mixture is smooth, frosty, and vibrant in color, about 30-45 seconds.
Stop the blender and taste the slushie; adjust by adding more lime juice or ice if needed, then pulse briefly to combine.
Pour the mango ginger lime slushie into glasses, letting the icy, colorful mixture cascade into the cups.
Serve immediately, garnished with a lime wedge or fresh mint if desired, and enjoy the refreshing tropical chill.