Camellia Sinensis Origin: China Kosher Certified by Kosher Certification Services Partially oxidized tea yielding a mild aromatic flavor between that of black and green tea. Oolong tea is commonly served as the house tea in chinese restaurants in the US. Oolong tea contains a large quantity of polyphenol. According to research, it has become clear that polyphenol is the ingredient that generates the delicious flavor unique to oolong tea and also promotes beauty and health.Starwest Botanicals