What is the difference between white chocolate and milk chocolate Dubai bars?

White chocolate Dubai bars use white couverture (no cocoa solids, only cocoa butter, milk, and sugar), giving a sweeter, creamier shell that lets the pistachio filling's green color show through dramatically when cut. Milk chocolate Dubai bars have a softer, more familiar sweetness that balances well with the slightly savory tahini. White chocolate is trickier to temper due to its lower melting point and lack of cocoa solids.