Served this to guest over the July 4th weekend and it was a big success, very refreshing light summer dessert. I didn't serve it the Vietnamese way, insted, added a couple tablespoons of kahlua to the mixture and about 1/3 cup more sugar. Served with a dalop of lightly sweetened whip cream on top! The flavor is definitely a 5 star, however suggest changing the directions to indicate that the mixture should be raked with a fork periodically. Had difficult time getting shavings after 5 hours of freezing. Thanks Sharon for great recipe!