Through the clues you provided, I found an e-book that might fit the description. Its name is Infinite Food God System. This is an online novel, which tells the story that the protagonist Lin Yu got a "dish god system".

In this system, Lin Yu can constantly upgrade her skills and abilities by planting organic vegetables, fishing and practicing martial arts, and she can also open a restaurant to make money. Nutrient solution is used to promote the growth of vegetables and improve their 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 interesting and entertaining.