Onions buried with the dead were found in Egyptian tombs 5000 or 6000 years ago, and many onion patterns were painted on the walls of ancient Egyptian buildings on the sarcophagus. This shows that onion has long been a human food.
Onion is one of the favorite vegetables of Russians, and it is also a vegetable that they can’t do without three meals a day. Because of the short summer and long winter in Russia and insufficient sunshine, the fresh vegetables and fruits are very few and difficult to store. Especially in the long winter, potatoes, carrots, onions and cabbage are also called the “four king of heaven” on the table by Russia, accompanying thousands of families to survive the severe cold.
Sulfur compounds in onions are powerful ingredients that kill many kinds of bacteria, including Streptococcus mutans, which causes tooth decay. Therefore, doctors suggest eating half a raw onion every day can not only prevent tooth decay, but also help reduce cholesterol, prevent heart disease and improve health.