Extraordinary color and tropical flavors distinguish this rice salad. You will need really ripe mangoes for it. Here's
 how to tell if one is ready to use or not: The flesh should feel soft when pressed, and the mango should have a sweet, fruity aroma. To ensure that the mangoes are
 ready when you want them, buy them ahead of time and let them ripen on your counter a matter of a few days, usually.