A dragon dumpling is a translucent "skin" that wraps a shaved ice-like "red bean paste" that combines coffee, tea, and fruit flavors. Basically, you can think that it contains the contents of "Frappuccino". It is a sweet with the motif of "chimaki" that can be eaten after the traditional event "Dragon Boat Festival" held every year in China.
The Dragon Dumpling will go on sale every summer in Starbucks, China, since 2009. This year's flavors are "Strawberry & Cream," "Earl Gray Jerry," "Mango," "Green Tea & Red Bean (Azuki)," and "Coffee Almond."
A cool dragon dumpling that looks cute. It's a pity that you can't eat it in Japan, but why not give it a try when you visit China?