1, find a glass bottle that can be sealed, clean it, sterilize it at high temperature and high pressure, and steam it with boiling water or pressure cooker;

2. Put the prepared tomato sauce into the bottle immediately, cover it with a false cover, tighten the cover immediately after cooling, and wrap the plastic wrap around the bottle mouth to prevent air leakage and bacteria from entering;

3. After sealing, put it into the refrigerator, and control the temperature at about 5℃, so the shelf life can be about one month;

4. When you take it, you should seal it again. Because frequent unsealing will also increase bacteria, the best way is to store it in a small bottle and eat it all at once.