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.“

„Hui Gan 回甘, Hui Tian 回甜, Sheng Jin 生津, & Hui Yun 回韻…In literally term, Hui Gan, sometimes referred to as Hui Wei, is to reflect sweetly on a past event. Borrowing from the term 'to reflect', Hui Gan in tea is, simply put, a reflection on the sweetness of the tea - when one drink the tea, when the tea slides through the cavity of the mouth into the throat, there comes, after a short while, a sweetness that rises up from the throat. This sweetness is sometimes accompanied with a fragrance. Do not keep the upper and lower mouth pressed together when sipping tea, but create a cavity instead by lowering the jaw. Let the tea wash over the entire inside of the mouth, and then direct the tea to slide from the sides of the jaw into the throat. While holding the empty cavity, breathe out instead of in after you swallow the tea, there is warmth in the breath accompanied by a fragrance, and the same fragrance that rises up from the throat. This is Hui Gan.“