Comment on
How to gain weight from eating almost exclusively bread and potatoes?
With oils, it is extra virgin olive oil or bust imo.
Olive oil has substances equivalent to ibuprofen in it, along with plenty of other even better things.
There is a problem in this industry where most oils unless they have a harvest date are like playing the lottery with what you are actually consuming so you should absolutely make sure to get on with it even though it might look more expensive it is by far the most calorie dense and well rounded thing you can consume and you only need to consume it in quantities of a shot glass or less a day so even a medium sized bottle will last you months.
Make sure to store it away from sunlight, this breaks down all of the more useful substances in it.