Yellow tea, called huángchá (黄茶; 黃茶) in Chinese and hwangcha (황차; 黃茶) in Korean, is a rare and expensive variety of tea.:58 It is produced similarly to green tea, but with an added step of being steamed under a damp cloth after partial oxidation, giving the leaves a slightly yellow colouring during the drying process.:32 This process also imparts a mellower and less grassy taste than is found in green teas. The tea is a cross between unoxidized green tea and post-fermented dark tea.