Oolong darjeeling Indian tea in silk packaging. Oolong tea is also known as partially or semi-fermented tea as its secret lies in the fermentation of the leaf’S outer edges, while the heart of the leaf remains unfermented. Oolong Darjeeling Indian teas have some of the qualities of both black and green teas. At their best, oolong teas are beautiful and full bodied with a fragrant flavor and fruity, sweet aroma. In essence, a combination of the characteristics of a Darjeeling and an Oolong. We cupped several new Darjeeling Oolongs and found this one to be by far the most interesting. Through repeated and complicated steps the tea leaves are partially oxidyzed. Light in the cup with haunting aromas, Oolong teas will richly reward those that explore them.