Hippocrates soup

I got this recipe from a contact who got it from The Gerson Therapy book, which preaches no salt. Dr. Max Gerson was a German, who escaped Nazi Germany and practiced medicine on Park Avenue, NYC. He recommended the Hippocrates soup, yes, the man himself, and suggests that it cleanses the liver. As you would imagine, without salt and other seasonings, the soup tastes a bit bland.

“To make the Hippocrates special soup, the following vegetables should be thoroughly washed, not peeled, but into cubes, covered with water, and cooked for two hours. Put everything through a food mill; allow only fibers and peels to remain. The result is a thick, creamy soup.”

– 1 medium celery knob (root). If celery root is not in season, substitute 3 or 4 stalks of branch celery.
– A small amount of parsley
– 1-1/2 lbs of tomatoes (more if desired during the summer season)
– 2 medium onions
– 1 medium parsley root (rarely available; omit if not)
– 2 small leeks (if not available , substitute 2 additional medium onions)
– several cloves of garlic
– 1 lb of potatoes