Pu-erh tea

„Bĭng: The tea cake itself. Tea cakes or other compressed pu'er can be made up of two or more grades of tea, typically with higher grade leaves on the outside of the cake and lower grades or broken leaves in the center. This is done to improve the appearance of the tea cake and improve its sale. Predicting the grade of tea used on the inside takes some effort and experience in selection. However, the area in and around the dimple of the tea cake can sometimes reveal the quality of the inner leaves.“

„Pu-erh shape - Melon, or gold melon - Its shape is similar to tuóchá, but larger in size, with a much thicker body decorated with pumpkin-like stripes. This shape was created for the famous "Tribute tea" (貢茶) made expressly for the Qing Dynasty emperors from the best tea leaves of Yiwu Mountain. Larger specimens of this shape are sometimes called "human-head tea" (人頭茶), due in part to its size and shape, and because in the past it was often presented in court in a similar manner to severed heads of enemies or criminals.“