Ganquan bean curd and Ganquan dried bean curd have long been famous, and they became even more famous in 2 1 century. Ganquan tofu Ganquan dried tofu has a long history, but it was not until 1937 that it began to be produced. At that time, a man named Zhang Minghuan opened a tofu shop and sold tofu. At that time, because there were few people, tofu was often sold out, so he put tofu slices on the lid to dry as snacks. After a while, everyone said it was delicious, so Zhang specialized in selling tofu slices and named them "dried tofu". He can be said to be the founder of Ganquan dried tofu. Later, Cheng Zhongxing, Li Wenyu and other tofu shops began to produce and sell tofu and dried tofu. After the forties, there were countless shops and stalls selling tofu and dried tofu in ganquan town. At that time, in ganquan town, under the eaves on both sides of the street, almost all dried tofu strings were strung with ropes, which became a landscape and a symbol of oasis. At that time, the street was narrow, about two or four meters wide. People riding mules and horses passed by the street, and the string of dried tofu was in front of them, just at hand, and they could not reach out to pick a string to eat. Some buy both tofu and dried tofu. In the 1940s, there were many garrisons in Ganquan County, and people came and went, which was very lively. The fame of Ganquan tofu and dried tofu has also been spread to all directions by these people who come and go.

In the old society, Ganquan tofu and dried tofu were very popular among Han people near Yan 'an, and the sales of tofu were very fast, while the sales of dried tofu were not large either as snacks or as side dishes when drinking. 1983, the county guest house introduced it to the banquet table to entertain guests from up and down. This made the reputation of dried tofu further greatly enhanced and spread far and wide. 1996, the county decided to carry out modern production, began to change the traditional way of manual workshops or relying mainly on manual labor, and gradually changed to large-scale and modern production, which made the quantity and quality of Ganquan tofu and dried tofu reach a new level. The first company to introduce modern production equipment was Ganquan County Government Guest House, which took the lead in establishing Ganquan Shui Mei Food Co., Ltd. The "Shui Mei" brand tofu and dried tofu they produced were officially recognized at the 4th China Yangling Agricultural Expo, and they applied for patents and won the Houji Gold Award. In August, 2004, under the great attention of the county party committee and government, and with the strong support of the county investment promotion bureau, the Federation of Industry and Commerce and other relevant departments, the bean products industry association of Ganquan County was formally established. Since then, the production of Ganquan tofu and dried tofu has embarked on the road of standardized development. There are 40 individual dried bean curd production and processing enterprises in Ganquan, among which 8 production enterprises such as Manulife, Baqianli, Lubao, Pengde, Changqing, Jiajue, Taohua and Shuangqing have emerged. Dried bean curd is all packed in vacuum and enters some markets in Shaanxi Province and the whole country in batches.

The good quality of Ganquan tofu and dried tofu has a lot to do with the local spring water. Ganquan is known as "the land of beautiful water". According to legend, Emperor Yang Di once went to Ganquan to drink water, so he got the name "Meishui Spring" and brought it to the forbidden area to give it to the palace as "tribute water". Tofu and dried tofu made with beautiful water are delicious and lasting. Ganquan dried bean curd made of double green beans, dark green as jade, like a gem, rich in oil, dazzling, fragrant, can not help but make people salivate.