Pu-erh tea

„The leaves are then dry pan-fried using a large wok in a process called "kill green" (殺青; pinyin: shā qīng), which arrests most enzyme activity in the leaf and prevents full oxidation. After pan-frying, the leaves are rolled, rubbed, and shaped into strands through several steps to lightly bruise the tea and then left to dry in the sun.“

„The Fragrance of Tea
For the main, Puerh fragrances can be divided into two kinds; distinct and indistinct or explicit and implicit. The Distinct fragrance of Raw Puerh tea is immediately obvious as a delicate, bright fragrance; a fresh, crisp aroma that is uplifting“