I think the fear is of the impulse to treat this as "the end of the diet -whoppeee, one little bag of crisps/chip supper/pint of beer can't do much damage now"
I caught myself a couple of times just before I slipped into that error when I was traveling back on the Eurostar, and on the following days.
Is it 40-50g TOTAL? I thought it was slice?? Phew then... my wrap is about 38/40g and I've only had one today and one yesterday. Guess that's it, eh?
Well - I don't know about canape - but the bread was definitely smaller than the egg, and some egg-origami was necessary to complete the 'widge.
My real sorrow is that I am (or was) a baker of professional quality - I used to get up early every morning to prove and bake 3 or 4 loaves of artisan sourdough. Most of it went to friends, family and neighbours, but I daren't even open my baking and proving drawers anymore.
I never expected to be a regular Waitrose shopper!
Waitrose is expanding extremely rapidly to fill the slot Sainsburys used to have (Delia is now their spokesperson!). I think it's increasingly seen as being up-market in quality but down to earth and pretty good value for money.
Excellent quality and the prices tend to be reasonable. In fact, I wish we had one nearby.