Through the clues you provided, I found an e-book that might fit the description. Its name is the infinite god of food system. This is an online novel, which tells the story that Lin Yu, the protagonist, has acquired a "god of food system".

In this system, Lin Yu can continuously improve her skills and abilities by planting organic vegetables, fishing and practicing martial arts. She can also open a restaurant to make money. Nutrient solution is used to promote vegetable growth and improve vegetable quality.

In addition, this system has many other functions, such as making all kinds of delicious food, helping others solve problems, defeating enemies and so on. Generally speaking, this is a light novel with the theme of food, adventure and cultivation, which is very interesting and entertaining.