Salt.
https://olumialife.com/knowledge/how-does-insulin-affect-lep...
For cooking, I understand olive oil is unhealthy (I think you create carcinogens as a side-effect), as are many other oils, but that coconut oil doesn't do this because of its different melting temperature.
I believe the situation with oil is a bit more complicated than that, and you're generally fine with olive oil unless you make it smoke, which is fairly non-trivial to do, despite its low smoking point. There seems to be some debate on the topic: http://www.seriouseats.com/2015/03/cooking-with-olive-oil-fa...
Coconut oil in particular actually has a low smoking point. If you want to be safe, you want Avocado oil.
I initially felt the same way as you wrt tastiness, but had a friend bring me back a tin of oil from Italy recently and whoooo boy it's just the most phenomenal thing. Add a bit of salt & pepper to a shallow bowl of oil for dipping bread.
Olive oil with herbs is amazing. Give it a whirl.
Reposting the question from the comment:
> Doesn't fat make food more satisfying, making you feel fulfilled sooner?
Needs a citation I guess.
For most people high fiber foods are better.
Ketogenic diets might increase your metabolism and reduce your appetite and hunger, which makes weight loss easier, but you'll still gain weight if you eat too many fat calories each day. Even if you cut out carbs entirely.
This is the exact point the article is proving wrong.
By cutting butter, he's also effectively cut an unnecessary carb-heavy between-meal snack, since he doesn't want the baguette without the butter.
It literally says in the text that he ate less overall.
