To understand why olive oil is gluten free we should look at what olive oil is and the ingredients it’s made from. By definition olive oil is: An oil pressed from ripe olives.
Is All Olive Oil Gluten Free?While olive oil is unilaterally considered gluten free, not all olive oils are. Olive oils would not be gluten free for one of two reasons.
How is Olive Oil Made?Olive oil is simply made by pressing fresh olives until the oil comes out. This can be done at home or on a larger scale for commercial production.
Pressing is the healthiest way to make olive oil. First the olives and their pits are ground up into a paste. Then they are pressed between plates exerting a high amount of pressure so that the oil can be extracted.