May be because the temperature is too low, in such a case is difficult to cover in a short time. If the temperature is relatively low, it takes at least a week or even longer, so that you can gradually see the effect. When covering beans, we must pay attention not to frequently open the container to see, otherwise it will also affect the time to cover beans the more times to see, the longer the time is needed, because each time to open will lead to a lower temperature, thereby extending the time.
Pay attention to temperature and humidity
In fact, the most important thing is to maintain sufficient temperature and humidity, so as to allow mucor growth. When covering beans, the indoor temperature is best to reach 25 degrees, so as to ensure the time of covering beans. The cooked beans can be touched by hand, slightly feeling wet but not touching, and then you can take wooden boxes or cartons and put a layer of warm things on the bottom.
be sure to keep warm
You can choose anything to keep warm, whether it is cotton clothes or cotton wool or even straw, as long as it is non-toxic and harmless. Once you've spread it all over the place, you can put the cooked beans in the container, and because you're surrounded by something to keep you warm, it's only going to get hotter. During this period of time, it is best not to frequently open the container to watch the shape of soy beans, otherwise it will affect the temperature in the container, thereby extending the time of covering soy beans.
Observe color
While covering soy beans, we should also pay attention to what color the hair on the beans is, if the first is white hair, and then becomes yellow-green hair, then soy beans are normal. However, if there is black hair, pay attention to it, because the appearance of black hair means failure. If there is only a partial black hair, you can remove this part to avoid affecting other parts, but if it is all black, it needs to be re-done.
Once the temperature has dropped to about 40 degrees, store the beans in a jar with a lid. Put it in the fermentation tank and bring it to about 45 degrees. Three days and three nights.
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2. Open a look, beans have a layer of white like gray, and then stir with bamboo chopsticks, can be drawn into silk, it is good.