Rou Gui (肉桂, Ròu Guì, "Cinnamon") The name of this tea refers to Cassia, a species of cinnamon. There are several grades of Ròu Guì including a lighter oxidation version, however our Ròu Guì is the product of a more traditional, heavier oxidation process. The distinctive mineral character of this tea makes it one of the most highly sought-after breeds of Wuyi oolong, and it has enjoyed increasing popularity in recent years. Fragrances and flavor of crushed granite, chocolate covered cherries, charred oak.