Sadly, they are not devoid of calories and fat.  Fortunately I noticed what I was doing and stopped at a reasonable quantity.  It’s been recommended, many times, that one should not do anything else while eating — no TV, no reading — and I see the value of that.  I’m at 511 calories right now, with dinner still to go.  We’re having salmon (I forgot it was in the fridge, and it needs to be eaten today, so much for all-veg day) but I will also make a zucchini and tofu stir fry. 