Kuaiyu Mountain Chestnuts

Kuaiyu Mountain Chestnuts

Kuaiyu Mountain chestnuts are a product with geographical indication status.

　　Located in the eastern part of the Shandong Peninsula, Kuaiyu Mountain is one of the regions in Shandong Province with a long history and high quality of chestnut cultivation. The chestnut planting area of Kuaiyu Mountain spans 400 hectares, covering 359 administrative villages across seven towns (offices) in Wendeng — Jieshi, Gejia, Xiaoguan, Zhangjiachan, Songcun, Zetou, and Huanshan. The chestnuts are harvested between September and October. Depending on the variety and quality, fresh chestnuts are priced between 10 and 20 yuan per kilogram, with a yield value of 3,000 to 5,000 yuan per mu, making them a highly profitable crop and a major source of income and prosperity for farmers in the Kuaiyu Mountain area of Wendeng. The cultivation of Kuaiyu Mountain chestnuts dates back over 2,000 years. However, before the Qing Dynasty, there were few efforts in seed collection and nursery cultivation, with most trees growing naturally from fallen seeds. It was not until after 1980 that systematic introduction and domesticated cultivation began. The chestnut varieties of Kuaiyu Mountain are cold-resistant and drought-tolerant, with a lifespan of up to 300 years. The burrs of Kuaiyu Mountain chestnuts are medium to large, with an average single nut weight of 11.9g. The fruit is heart-shaped, with a brownish outer shell that is not particularly glossy, covered in white fuzz, and has a pale yellow, fine, glutinous, and sweet kernel. The shape is uniform, the shell is crisp and thin, easily cracked with a fingernail, and the shell does not stick to the kernel. The taste is sweet and fragrant, offering the unique flavor of this variety. The chestnuts can be eaten raw, roasted, or boiled, all of which bring out their delicious aroma. Kuaiyu Mountain chestnuts are rich in nutrients. According to test results from the Food Quality Supervision and Testing Center (Jinan) of the Ministry of Agriculture, they contain 7.19% protein, 49.3% starch, 25.53% total sugar, 11.75mg/kg zinc, and 104.95mg/100g calcium. These chestnuts are prized for their sweet, glutinous texture and crisp sweetness when eaten raw, along with their distinctive excellent eating qualities. Owing to their superior quality, Kuaiyu Mountain chestnuts are popular in major cities across China and are also exported to neighboring countries such as South Korea and Japan.

　　Fruit

　　Geographic Range

　　The protected geographic indication area for Kuaiyu Mountain chestnuts covers 359 administrative villages across six towns — Gejia, Jieshi, Songcun, Zetou, Zhangjiachan, and Xiaoguan — and the Huanshan Subdistrict Office within Wendeng District, Weihai City. The boundary extends from Dianzitou Village in Jieshi Town in the north; to Wolong Village in Zhangjiachan Town in the east; to Wanjiazhai Village in Xiaoguan Town in the south; and to Xitanjiakou Village in Gejia Town in the west. The geographic coordinates are between 121°43′ to 122°09′ east longitude and 36°54′ to 37°16′ north latitude. The total protected area is 86,400 hectares, with a planted area of 400 hectares. The annual production is 1,200 tons.

　　Product Quality Characteristics

　　1. External Sensory Characteristics: The burrs of Kuaiyu Mountain chestnuts are medium to large, and the fruit is heart-shaped with tender yellow flesh that is fine, glutinous, and sweet, featuring a uniform appearance. The shell is crisp and thin, dark brown in color, not particularly glossy, and can be easily cracked open with a fingernail without sticking to the kernel. The chestnuts are crisp and sweet when eaten raw, fragrant when roasted, and can also be ground into powder or used in various dishes and pastries. 2. Internal Quality Indicators: Kuaiyu Mountain chestnuts are rich in nutrients. According to test results from the Food Quality Supervision and Testing Center (Jinan) of the Ministry of Agriculture, they contain no less than 7% protein, 45% starch, 18% total sugar, 10mg/kg zinc, and 80mg/100g calcium. The fruit has health benefits such as strengthening the spleen and qi, nourishing kidneys, and fortifying the lower back. 3. Safety Requirements: The hygiene standards for Kuaiyu Mountain chestnuts comply with the NY/T1042-2006 Green Food Nut Quality Standard.