Hi YumYum - this lady (I understand) has lost a lot of weight, so when my girlfriend & I were discussing FF against total calories & carbs the other day, she sent me the posting. In the BSD book, there are 3 'instant soup' recipes, miso & baby veg = 70 calories, pho with chicken & spinach = 130 calories & consommé with celeriac & spring onions, 40 calories, so if we did a stock based vegetable, soup, say spring onions, sliced mange-tout and some spinach, it could come in at 60 calories, but suspect a teaspoon of tahini & peanut butter with a drizzle of olive oil would take it to a bit more.
I reckon I can make a decent soup with a bit of onion, garlic stock & some 'above the ground' veggies for 100 calories, including olive oil for cooking it up in.
For me, the message was to take on board some fat, it is so hard after all the years of being told it was bad for us, I am now trying hard to embrace it. As I love cheese this shouldn't be a big issue, just need to be careful on quantities!