Chọn nước cốt chanh. Cho cà chua vào hũ đựng. Loại bỏ không khí. Lau sạch nước cà chua trên miệng và xung quanh hũ đựng.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
You can either use fresh lemon juice, or lemon juice from a bottle. The lemon juice will be added to the jar along with the tomatoes. The juice helps to prevent the tomatoes from spoiling while they are in the jars, and also helps to retain the color and flavor of the tomatoes. Place the jars on a heat resistant surface and begin spooning the quartered tomatoes into the jars. Fill the jars until there is only about ½ of an inch of space left at the top of the jars. Add two tablespoons of lemon j