It is a famous Vietnamese Dessert.he name mont lone yay paw literally means "round snack on the water" in Burmese, as it's made by boiling up balls of rice dough which bob along on top of the bubbling water when they're ready to eat. The balls are stuffed with palm jaggery which we call htanyet, although you can substitute palm sugar. In keeping with the playful spirit of Thingyan, some folk will stuff the occasional ball with bird's eye chillies instead and offer them to unsuspecting friends.