Run a lemon around the rim of each glass and dip in the cane sugar to coat the rim.
Add the mango and lemon juice and cane sugar if you like, to a blender or magic bullet. Whiz it up really well!
Divide the mango mixture between two glasses and add the vodka and limonchello. Give it a stir.
Fill up the glass with some ice and then top them up with soda.
Serve!