In Japan, the government advocates that all people eat natto, and children, adults and the elderly should eat it. The government turned it into a daily healthy food. In China, many people mistakenly think that douchi is natto, and the content of nattokinase in douchi is very small, because nattokinase is fermented with the participation of a special kind of bacteria, and there is no such bacteria in douchi, so it is impossible to produce nattokinase substance. Although natto is good, it really stinks, so many people don't like it. So how to eat natto? Natto can be eaten with onions, because onions have a strong taste, which can cover up the taste of natto, and it is better to add some vinegar. The specific method is: Dice the onion and put it together with natto, then add the aged vinegar and stir it evenly, so that it won't have the smell of natto. Together, these things have a stronger protective effect on cardiovascular and cerebrovascular diseases. Natto has so many benefits for cardiovascular and cerebrovascular diseases, when can it be eaten to exert its greatest effect? It is best to eat it at dinner, because nattokinase can dissolve thrombus 1~ 12 hours after it enters our digestive system, and our brain blood flow is slow at night, which is the most prone to cerebral thrombosis and stroke. Therefore, in order to make natto play its greatest role, we'd better eat natto at night.