Korean Natural Farming (KNF) is a system based on generations of sustainable farming methods practiced in Japan, China, and Korea. It is gaining popularity largely because it is showing considerable benefits in the production of plants and livestock. The methods employed by the KNF system maintains a balance in nutrient input and output. This also has a very positive effect upon the environment. The fermented products are used both on the land and in animal feeds. Homeopathy Dairy Farm is using fermented foods.