1, refrigerator preservation. Tomato paste is a concentrated product of tomato paste, which is made from mature red tomatoes through crushing, pulping, peeling and seed concentration, canning and sterilization. The finished product is bright red paste, which has the unique flavor of tomato. Western food is widely used, and Chinese cooking is mainly used for the modulation of "tomato juice flavor" with strong sweet and sour taste. Such as fish flowers in tomato sauce, diced tomatoes and rabbits, and tenderloin in tomato sauce.

2. Lemon is a good antioxidant, which can prolong the shelf life of tomato sauce. It is recommended to use a glass container with a sealed lid and high heat resistance when putting ketchup, rinse it with boiling water before use and keep the bottle dry. When taking jam from the bottle, use a clean and waterless spoon, and take as much as you want. After taking it out, cover the bottle cap tightly. The homemade tomato sauce can be stored in the refrigerator for 7 days.