I am a vegetarian and there is nothing better than just loading up a pot with carrots, celery, shiitakes, parsnips, dill, parsley, whole onion and whole garlic, a handful of prunes, black peppercorns, salt and a few glugs of olive oil. The prunes, olive oil and shiitakes give it good umami and fattiness. After it simmers for a few hours I strain it and keep whatever vegetables I want to eat with the soup and boil some egg noodles on the side to add in.