Xiyan Oolong Tea was founded in the 1970s and is produced in the area of ​​Xiyan Mountain, Dapu County, Guangdong Province. The natural conditions are unique. The mountains are cloudy and foggy, densely forested, surrounded by mountains, with less direct light, more diffused light, and relatively high humidity. Fertile, suitable for tea tree balance growth, bud leaves are strong, leaves are soft, leaves are bright green, rich in amino acids and aromatic substances, etc., because of the rich content of fresh leaves, it has laid a good material foundation for making famous tea. The shape of Xiyan oolong tea is tightly curled, the color is black and smooth; the inner aroma is long-lasting, the taste is mellow and refreshing, the aftertaste is smooth, the tea soup is orange and bright, and the green bottom of the leaf is red-rimmed and resistant to brewing.

Technical requirements for quality of Xiyan oolong tea I. Variety Medium and small leaf oolong tea varieties and local populations. 2. Site conditions The soil types are four types: yellow soil, red soil, red soil and paddy soil. Yellow soil and red soil are mainly distributed at an altitude of 500 to 1000 meters above sea level. Xiyan Mountain is dominated by yellow-red soil, and the soil is loose, moist, fertile and has good vegetation growth. The soil has a pH of 3.9 to 4.7 and an organic matter content of 2.3 to 4.0. Third, cultivation management Seedling: The use of clones to breed tea seedlings. 2. 3. Picking criteria: fresh leaves with two leaves in the bud or three leaves in the bud. 4. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. Fourth, the processing technology Process: picking → drying green → making green (shaking green) → killing (sautéed tea) → 揉捻 → dry. 2. Tea green is not damaged, no sunburn, no chicken arm buds, no surface water. (2) Sun-dried: lightly spread, lightly sunny, 9 to 11 o'clock in the morning, 4 to 5 o'clock in the afternoon is most suitable, the tea green water loss rate is about 15%, the leaf color is darkened, and the end leaf sagging is moderate. (3) Be green: including touching green (shaking green) and standing alternately for each other, it is the key link to form the characteristic characteristics of Xiyan oolong tea. The number of bumps (shakes) in each round is gradually increased, the intensity is gradually increased from light to light, the rest time is shortened from a short length, and the thickness of the leaf is gradually thickened. (4) Killing: high temperature, killing, killing, killing. (5) 揉捻: The combination of loose pressure causes the rope to be tight and the cell cell breakage rate is moderate. (6) Drying: divided into two parts: initial baking and re-baking. The initial baking temperature is 150 °C, and the tea embryo water is evaporated as soon as possible after baking for 20 to 30 minutes. The water loss rate of the tea is ≤7%; the re-baking temperature is 100 °C, and the baking time is Extend, adopt the "smoke fire bake" approach. During the baking process, the tea embryo should be mixed at the right time to make the tea embryo heat and lose water evenly. 3. Refining: hair tea pile, feeding, screening, wind selection, picking and re-baking, packaging and other links. Fourth, quality characteristics Sensory features: The characteristics of the project are strong and tight, full and smooth, color, yellow, brown, oil, aroma, nectar, natural fragrance, long-lasting soup, orange, bright, slightly golden, mellow, sweet, fresh, sweet Good sex, the leaves are green, even and soft. Physical and chemical indicators: Project index water extract,%(m/m) ≥ 36 tea polyphenols,%(m/m) ≥ 21 caffeine,%(m/m) ≥ 25 moisture,%(m/m) ≤ 6.0 powder ,%(m/m) ≤ 1.0 ash,%(m/m) ≤ 6.0 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

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Producers within the production area of ​​Xiyan Oolong Tea may submit an application to the Quality and Technical Supervision Bureau of Dapu County, Guangdong Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Guangdong Provincial Bureau of Quality and Technical Supervision and submitted to the AQSIQ for approval. announcement.