At present, the most famous sweet potato is Yan Shu No.25, and Yan Shu No.25 in Yantai, Shandong Province is the most famous. It is a sweet potato variety selected by Yantai Academy of Agricultural Sciences through hybridization technology. Yan Shu No.25 is uniform in size and high in sugar content. So it is very suitable for baking. Honey juice will flow out after baking, and it tastes sweet and soft, so it is deeply loved by people. Although many places are now promoting the cultivation of Yan Shu No.25, the taste is similar to that of Yantai. Yan Shu No.25 is also the most famous in Yantai.
Another sweet potato variety is particularly famous in recent years, that is chestnut sweet potato, among which the sweet potato in Lintong, Shaanxi Province is the most famous, because it is located on the Weihe River, the largest tributary of the Yellow River, and grows in semi-sandy weak alkaline soil. Coupled with the local climate, it has formed a unique taste. Why is it called chestnut sweet potato? It is not like chestnut in appearance, but the meat quality is similar to the color and taste of chestnut, which is the taste of powder, so people call it chestnut sweet potato.
The small oak tree in Tianmu Mountain is also famous. Its origin is Lin 'an, Zhejiang, and it was once a "network celebrity" in the sweet potato industry. Its main external characteristics are small and mini, like ginseng, but it tastes good, suitable for steaming, delicate and fragrant, sweet and delicious.
There is also Qiaotou sweet potato in Qiaotou Town, Hainan, which is also very famous. After steaming, it tastes sweet, powdery and a little sandy, so it is also very popular. The taste of sweet potato at Qiaotou is also related to geographical location. Because of the abundant rain and high temperature in Qiaotou Town, the sugar accumulation of sweet potato and the high selenium content in the soil are promoted, and Qiaotou sweet potato is also known as "the first sweet potato rich in selenium in China".
This paper lists several well-known sweet potato varieties and the geographical location of the most famous places in recent years, so we can't generally say where the sweet potato is the most famous, it depends on the varieties.