1, first wash all the tomatoes, completely dry the water and then use the wipe to rub the tomatoes crushed some of the pots and tools here can not be stained with water and oil.

2, the good tomatoes directly into the water-free oil-free clean glass bottle filled with glass bottle cap tight, if you are afraid of insecurity, you can also screw the cap slightly loose, in the pot after steaming while hot to tighten the cap.

3, all the cover cover, on the pot to steam. Remember to steam the pot pour cool water, not hot water, the bottle with tomatoes directly into it.

4, cover the pot, high heat boil and then turn the minimum fire steam for 40 minutes. 40 minutes after the fire and then simmer for half an hour before uncovering the pot so that the steamed tomatoes inside the vacuum, placed in a cool dry place to save 1-2 years are not afraid of bad.