
Add the frozen mango, mango nectar, ice, and lime juice to a blender. Blend until smooth and puréed.
Rim each glass by dipping the edges of two 16-ounce or four 8-ounce glasses into a shallow bowl of chamoy, then into some chili lime seasoning.
Add a generous drizzle of chamoy sauce to the bottom of each glass. Pour the smooth mango mixture halfway up the glasses, add another generous drizzle of chamoy, then top each with the remaining frozen mango mixture.
Garnish with one last drizzle of chamoy, some chile lime seasoning, diced fresh mango, and a tamarind candy straw. Serve immediately.