This recipe is not an axiom, you can vary the proportions of ingredients. You can diversify it by adding other favorite vegetables, spices and herbs. Or scraps from the freezer. Over time, you'll find the perfect vegetable broth to suit your tastes.There is no magic formula for vegetable broth. You can put anything you want in it. You can even use leftovers - peels, husks, dried and peeled vegetable parts, stems of greens.