Starbucks Iced Rice Dumplings paper coupon arrives at the store for use. Starbucks Star Ice Dumplings paper coupons are promotional coupons offered by Starbucks at specific times or events. Bring the voucher paper to a Starbucks store and present it to the cashier when ordering. If the coupon is eligible, the cashier will complete your order for you according to the offer on the coupon and enjoy the corresponding discount or offer.