Surprised no one has brought up bulletproof coffee yet.
http://www.fastcompany.com/3032635/most-creative-people/bull...
I've been experimenting with it for the last 2 weeks and have lost 3 pounds. I've also noticed reduced cravings during the time between breakfast and lunch and I don't feel an intense caffeine hit like I did when I would drink iced coffee.
I'm not sure how long I will continue experimenting with this nor do I know the long-term effects of having this drink every morning.