Tzatziki, water chestnut and water chestnut are the same kind, water chestnut is mainly divided into wild type and cultivated type, the wild type water chestnut leafy stem is thinner, shorter and smaller bulb; the cultivated type water chestnut leafy stem is thicker, taller and larger bulb.

In the cultivated type of water chestnut varieties between the plant morphology is very similar, the main difference is manifested in the underground bulb external morphology, the difference is mainly manifested in the bottom of the bulb, there are concave umbilicus and flat umbilicus, so the cultivated type is divided into flat umbilical water chestnut and concave umbilical water chestnut.

Flat umbilical flesh is coarser, slag more starch content, more resistant to storage, concave umbilical water chestnut water and soluble solids content is high, sweet flavor, less slag.

Expanded Information:

Overseas, water chestnuts are mainly wildly distributed in the pools of countries such as Southeast Asia, America, Europe and Oceania and other countries in the pools, marshes, mudflats and other low-lying areas. The water chestnut in western countries was introduced in the 17th century.

China since the Western Han Dynasty has been cultivated records, there are more than 20 species and some varieties. In addition to alpine areas, its distribution is almost all over the country in all provinces and districts, while the economic cultivation is mainly in the Yangtze River basin and its southern region.

At present, water chestnut cultivation has formed several famous production areas, such as Guilin, Guangxi, Zhejiang Yuhang, Jiangsu Gaoyou and Suzhou, Fuzhou, Fujian, Hubei Xiaogan, Tuanfeng, Shayang, Yangliu Township, Lujiang County, Anhui, and Xuanzhou.