Are there any calories in roasted coffee beans?
And why do they seem to 'disappear' when turned into black coffee?
According to some websites, there are (I've seen values between 300 and 400 kcal per 100 g).
At the same time, when I check nutrition facts about black coffee - it says 0 kcal.
Where do all the calories of the coffee beans go when they turn into black coffee?
I read that when coffee is filtered (with paper filters), some oils are absorbed in the filter. But this alone does not seem enough to account for the missing calories. Also note that although the nutrition facts for black coffee are 'diluted' (i.e. it's expected they would be a lot less than the actual coffee in powder form, because there's water added), that is also not enough to bring the value to 0 kcal (however the rounding is performed).
And what about coffee that is not filtered (French press?) or even about eating whole roasted coffee beans - what would the calories be then?
Below are some sources with confusing/conflicting data:
Coffee beans kcal per 100 g:
- 406 kcal: http://www.waitrose.com/shop/DisplayProductFlyout?productId=28551
- 417 kcal: http://www.amazon.co.uk/Orzo-Coffee-Ground-Roasted-400/dp/B00EXPZIT6/ref=sr_1_1?ie=UTF8&qid=1443103310&sr=8-1
- 300 kcal: http://www.myfitnesspal.com/food/calories/generic-whole-plain-medium-roast-coffee-beans-eaten-227569387
- 267 kcal: http://www.nestle.co.uk/brands/coffee/dolcegusto/dolcegustopods