Oh, by the way, to increase metabolism, bulletproof coffee is awesome. Coffee + MCT-oil (which is very warming) + grassfed butter (contains lots of butyric acid which is also very metabolically stimulating). It also packs a ton of calories and is easy to digest due to it being a liquid. I know coffee is cooling by itself, but the butter and MCT-oil should more than make up for that.
If you really wanted to, you could add salt to it to make it a bit more Stone-y, i guess.