Chop all of the broccoli (including all the stem), savoy cabbage leaves (take out hard stems) leeks, and onion
Add olive oil to a saucepan and gently saute the onion and leek with celery seed, and some chopped fresh parsley (or dried parsley), and black pepper
Add hot water or stock, and gently simmer, then, blend when ready – it doesn’t need much water as it is a lovely soup when thick, the combination of the broccoli and savoy cabbage is very tasty