Cream of Celery

I love cooked celery and cream of celery soup, but have only had a canned version in my youth. This has a base of smooth pureed potato and celery (I used the leaves here). Then sautéed celery and onion add a great crunch and flavor. By adding the milk and sour cream to the piping hot soup, it did not need to be reheated, but we ate it right away. The special touch is the addition of celery seeds. Next time I will go for a gentler flavor and not use the celery leaves.