Natto machine and yogurt machine have different fermentation devices, and there must be temperature, humidity and air to make natto. Now the so-called yogurt natto machine in the market is actually a yogurt machine. The yogurt machine may not be successful in making natto, so it's normal for you to make it twice without silk. But natto machine can not only make natto, but also make yogurt. Because the temperature in natto machine is 40°C, it only takes a little longer to make yogurt with natto machine. The temperature of yogurt machine is 43-45 C, which is not suitable for natto fermentation.

I suggest you buy a Jiezhijie natto machine. Dalian Jiezhijie natto machine is the first and only one in China that has passed the 3C certification of natto machine. If you don't believe it, you can go to the website of the State Administration of Quality Supervision: 3C public inquiry-Product name: natto machine manufacturer: Dalian Jiezhijie Technology Development Co., Ltd. You can find out whether they have passed 3C certification by querying the natto machine and unit names of other brands you know.

The real natto machine can make yogurt, but the success rate of making natto by yogurt machine is low. Buying those so-called multifunctional natto machine is actually a yogurt machine.