How can I tell if castor oil for taking internally has expired? I have a bottle of organic castor oil (from a trusted food brand) in the fridge for the past few years, with most of it still left. Its expiry date is for almost a year ago but I notice there is no rancid smell. The only thing that might be strange is that a small amount has sunk to the bottom and turned white - I don't know if that's from being stored in a cold fridge though, or means it should not be used?
Replied by Mmsg