Sweet jujube zongzi filled with red dates are a Northern-style Dragon Boat treat. A family dessert with naturally sweet, fruity flavor.
Soak glutinous rice in water for at least 4 hours or overnight, then drain thoroughly.
Soak bamboo leaves in hot water for 30 minutes until pliable, then rinse and wipe each leaf clean.
Toss drained glutinous rice with sugar, vegetable oil, and salt to evenly season each grain.
Lay 2 bamboo leaves overlapping, form a cone at the bottom, and fill halfway with seasoned rice. Add 2–3 dried red dates in the center, then cover with more rice, pressing down gently.
Fold the leaves to cover the filling, shape into a tight pyramid, and wrap securely with kitchen twine. Repeat with remaining ingredients.
Place all zongzi in a large pot, cover with water, weigh down with a heatproof plate, and simmer at medium-low heat for 2.5 to 3 hours, ensuring the zongzi remain submerged.
Check water midway and add more boiling water if necessary. Cool slightly before unwrapping and serving.