To make Stuffed Lotus Root with Sticky Rice, begin by washing glutinous rice and soaking it for 4 to 5 hours or overnight. Ensure to drain the water before use. After washing and peeling the lotus root, trim about an inch from one end and retain the cut-off piece as a lid. Fill the holes of the lotus root with sticky rice pressing with chopsticks and securing the lid with toothpicks. In a pot, combine the lotus root, water, rock sugar, and red dates. Bring it to a boil over high heat, then simmer for an hour, turning the lotus root after 30 minutes and adding water if necessary. Once it is cooked, transfer the lotus root to a chopping board and allow it to cool. Slice the lotus root, drizzle with osmanthus syrup, and serve either warm or cold.