Add the gelatin to water and set aside.
Blend the mango until smooth.
Add sugar and milk, pulse until just combined.
Dip the gelatin in boiling hot water for 5 seconds, then add to blender. Pulse until smooth.
Pour the pudding mixture into glasses, gently tap the glasses on the bottom to remove any bubbles.
Refrigerate for at least 2 hours to set.
Top with more evaporated milk, mango chunks, maybe some mint sprigs or a dollop of whipped cream.