The shelf life of homemade strawberry jam is shorter than that of strawberry jam sold in the market because there is no preservative added. If it is refrigerated in the refrigerator, the shelf life can be about 3 months. The glass bottle containing strawberry jam should be sealed and eaten as soon as possible after opening the bottle. When using jam, you must use a dry and clean spoon, and don't let the wet spoon touch the whole jar of jam, so as to avoid the jam from being damp and moldy.

Self-made jam preservation method

1, boiling is a very important step, because long-term boiling can boil out pectin and taste in fruits, and long-term boiling can also fully sterilize.

2, add a lot of sugar, sugar can promote the water in the fruit to boil out, so that the sterilization effect can be more thorough, in principle, the addition of sugar can not exceed half of the weight of the fruit.

3. For the capacity of jam, use a glass container that can be sealed with a lid, and disinfect it in advance to ensure that there is no water or oil.

4. The finished jam should be canned while it is hot to prevent the bacteria in the air from falling on the jam when it is cooled, and then the whole bottle should be placed at room temperature to let it cool slowly, and then put in the refrigerator for cold storage.