Piña Colada Sherbet
If I was stranded on a deserted tropical island and could have only one dessert, this would be my choice. Admittedly, it would likely be my only choice, since all the ingredients are native to the tropics.
Cooks' Note
Thai coconut milk can be found in well-stocked supermarkets or Asian markets. Do not substitute Coco López, which is heavily sweetened.