You might be surprised to find out that dates are best stored in the fridge, despite the fact other dried fruit is fine the cupboard.
Whether it's Dijon or wholegrain, the preservatives in mustard mean it's completely safe to keep in your pantry after opening.
It wouldn't be entirely ridiculous to assume that because of the high sugar content, jam won't spoil after opening if you keep it in the cupboard.
In the US, eggs are sterilised after production to kill bacteria, which also weakens the eggshell. This means they should be kept cool to prevent the bacteria from returning.
Sesame oil and other unrefined nut oils are prone to going rancid and losing their flavour if kept at room temperature.
Similarly to nut oils, cold-pressed oils can also spoil over time due to oxidisation. Flaxseed oil, for example, contains alpha linolenic acid, which means it's unsaturated and therefore more unstable.
Some people assume that due to ketchup's high vinegar, salt and sugar content, it's safe to store at room temperature.
One of the few fruits that benefit from refrigeration are apples. This is because apples release ethylene gas which speeds up the ripening of any nearby fruit and veg.
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