Elaine's Veggie Soup

From time to time my wife makes a huge pot of vegetable soup and each one ends up being a bit unique because it includes whatever bags of end-of-life vegetables, fresh or frozen, happen to be available.  She starts by sautéing onion and garlic in some oil and adding that to one box each of chicken broth and chicken stock, a couple cans of diced tomatoes, a small head of cabbage (shredded), sliced carrots and celery, and rosemary, thyme and sage.  She simmers all that until the carrots are tender, then adds spinach leaves and finishes with salt and pepper to taste.