I didn’t follow the recipe, as usual. I simmered the celery, garlic and spinach together with the lentils for a while, because I like them well-cooked. The lettuce, however, I only wilted. I also let it cool completely before blending it, because it is safer to blend that way, and I was making it in advance for lunch anyway.
This green soup looks very much like the other green soups I’ve made in recent weeks – broccoli stalk soup, pea parsley soup, and greens soup – but each has a distinct flavour.