Probably one of the most complex and difficult types of tea to produce is Oolong. Oolong is a semi-oxidized tea produced primarily in China and Taiwan. Oxidation ranges from as little as 10% (near green tea) to as much as 80% (near black tea) giving Oolong the widest variety in style, taste and appearance. The Tea Master uses the aroma of the leaves during oxidation and knowledge of the growing region soil, climate and elevation to develop the desired flavor profile and final leaf shape. Many seasoned tea drinkers consider oolong their favorite!