In the first stage, we will need a pound of dried soybeans; Seasonings to cook the beans, like salt, garlic, onions, bay leaves, oregano, cumin, or whatever else you like; a culture to ferment the beans. Prepare soybeans that will be used to make fermented soybean, make sure the soybeans are clean from the dirt or other seeds so as not to damage the quality of fermented soybean. Wash soybeans then soak in clean water for two hours. The aim is to increase the volume of soybeans. Then, boil water in a large pan. After the water has boiled, add the soybeans and boil for 1-1.5 hours. The duration of boiling depends on the amount of soybeans that you used. As an example, 50 kilograms of soybeans are needed when boiling for one hour. Raise the soybeans and drain. Soak the soybeans that have been boiled in clean water. This process takes a long time, which is for about 15 to 24 hours. The purpose of this second immersion is to complete the first fermentation process. The next day, soybeans are ground roughly enough until the soybean seeds break into two parts. This process can be done with a grinding machine and avoid direct contact with separate soybeans from the skin layer. The method is to soak the soybeans and sift them using plastic bags. Heavy soybean seeds will sink, while the skin will float. Soybeans should be washed again using a washing machine. Do the same process three times. In the third washing, soybeans are doused with hot water. Sprinkle yeast to provoke the growth of good bacteria, with a ratio of 1.5 grams for 2 kilograms of soybeans. After the yeast fuses, wrap the fermented soybean using leaves or plastic that have given small holes. This hole is useful for the bacteria to get the air and it
needs to develop during the fermentation process. Keep the soybeans that have been wrapped in a fermentation room for 24 hours. Set the temperature arround 30 degrees Celsius or room temperature. Finally, after 24 hours. The fermented soybean is cooked and ready to be processed into various dishes.