Only the ones that are labelled as such. You really don’t want to risk your health, your gut flora or your liver by using essential oils that have not been produced for this specific purpose. I often hear of other essential oil companies distributors saying things like “you can ingest our oils” or “our oils are safe for cooking”. Believe me if it doesn’t say it on the bottle then don’t risk it. Plus in Australia we can’t use the word ingest when it comes to essential oils, so that should immediately sound alarm bells if you hear people use that word. Close to 50 of Young Living’s Essential Oils do meet the food labelling laws set out by Food Standards Australia and New Zealand.