(actually 4 to 6 depending On the size) GLUTINOUS RICE: Glutinous or sweet rice is a white, short-grained rice that has a sticky consistency when cooked. It can be found in Asian markets and many markets with asian specialty sections. CANNED COCONUT MILK: Canned coconut milk also is sold in Asian markets and some supermarkets with Asian specialty sections. Do not confuse this product with the water inside the coconut. SHORTCUT: A Japanese rice cooker can make short work of cooking the glutinous rice. Rather than soaking the rice, rinse it 3 times in cold water and drain. Cook rice according to manufacturer's directions. PROCEDURE: Cover rice with water and soak at least 6 hours or overnight (see shortcut). A couple of hours or so before serving, drain rice and spread on a cheesecloth-lined section of a steamer; steam for 45 minutes. During the steaming, sprinkle the rice 2 times with quarter cup water. Meanwhile, over medium heat using a Dutch oven or large saucepan, simmer the coconut milk on medium-low heat until it is reduced by one-third in volume. Use caution toward the end of simmering, because the coconut milk can sen spouts of liquid 2 or 8 cm above the pan toward the end of the simmering time if it is too hot. Remove from heat and stir in sugar and salt. When rice is finished steaming and has rested for 10 minutes, blend it with the warm, sweetened coconut milk; allow to stand for 10 minutes. Immediately arrange rice on platter and place mango on top. Serve.