Combine frozen mango, mango nectar, ice, lime juice and sugar in blender. Blend until smooth.

Dip the rims of your glasses in the Chamoy sauce and then in the tajin seasoning to create a spiced rim on your glass.

Drip some of the Chamoy sauce on the sides of the inside of the glass.

Pour the blended mango into the glasses and serve with a tamarind straw. You can also use slices of mango or lime to garnish the glass.

Serve immediately.