Pure oolong birt tang pure oolong tea is a premium chinese tea somewhere between green and black in oxidation oolong tea also known as wu long tea with heavier oxidation have been famous for hundreds of years for aiding digestion stimulating weight loss and fighting against free radicals oolong teas are full bodied in flavour and aroma ranging from green and floral to dark and roasted with many notes between birt tangs pure oolong tea is a slightly sweet and delicate tea with a re