The preservation of tomato sauce
1, lemon is a very good antioxidant, can extend the shelf life of the ketchup.
2 put tomato sauce, recommend using with cover to seal the heat resistance of high glass containers, blanching washed before use, and keep the bottle drying.
3, from the bottle of jam, want to use a clean without water spoons, how much is the most delicious and take, after take out the cap tightly.
4, homemade ketchup stored in the refrigerator freezer, can save 7 days.