Serious Eats: Talk
Amazing--negative calories! says dominos
I'm sure many of you've heard of the fact/myth/something that celery has negative calories (i.e., chewing and processing the fibre requires more energy of your body than is released).
Well, as computed by domino's pizza calorie calculator, spinach and onions (and apparently nearly every other vegetable) also allow for such dietary miracles.
(E.g., select 'hand tossed', and 'small', then start ticking the vegetables boxes--watch the calorie counter on the right.)
O.K., I know no one takes these things seriously in the first place.