Hartley’s, a well-known British brand of jams, jellies, and marmalades, has clarified the proper way to store jam, stating: “We recommend keeping your jam in the fridge after opening.
Hartley's settles jam debate over whether it belongs in fridge or cupboard The debate over whether certain foods should be refrigerated or stored in a cupboard for longer preservation has been ongoing for some time.
Though it may seem ironic that jam is commonly found on supermarket shelves rather than in the fridge, the reason behind this is the airtight seal on the jar.
While consumers can easily purchase their favourite brand of jam from supermarkets, or even make it themselves at home, the storage recommendations are the same for both: once the lid has been opened, it needs to be refrigerated.
Jam is a thick, sweet spread made from fruit and sugar, typically prepared by cooking chopped fruit until it reaches a setting point.
