“Old tea lump“ 老茶头 [lǎo chá tóu] refers to the Pu’er tea chunk which is hard to lossen because of the temperature, humidity and stirring during a pile fermentation. An outer lump layer has been completely fermented, while its core is not. It gives a unique taste, a mellow fragrance of fermented tea and a freshness of raw tea. In subsequent brews, a fresh and sweet taste of raw tea shows more, which is far better than that of assorted raw and processed Pu’er teas or a flavored liquid of both. Old tea lump is endurable, and its tea soup is dark red like wine, smooth, fragrant and sweet. Brewed leaves are reddish-brown, some with a dark green center due to an incomplete fermentation within a lump.