Oolong teas are sometimes referred to as blue teas. Traditionally made in China and Taiwan, oolongs are now found across most tea-growing regions. With more processing steps than any other tea, mastery of the art of making oolong takes many years to perfect.
Oolong teas are partially-oxidised, with levels ranging from around 20-70%. More lightly oxidised oolongs have fresher fruitier and vegetal notes, while some heavily oxidised oolongs could be mistaken for black tea. Oolongs are certainly the most complex tea category, with an exciting range of flavours and aromas elicited by the deliberate bruising of the leaf during processing.