Homemade chilli oil must be stored in the fridge and used within a week of making. Commercially produced chilli oils are heated to high temperatures which kill any bacteria and so they can be stored at room temperature.


Homemade chilli oil can be made from dried chillies added to heated oil. You can also use fresh chillies, but oil made in this way should be consumed on the day and not stored because of the risk of dangerous bacteria developing in in oil which could cause botulism.