Think of this recipe as a basic formula for improvising with fresh vegetables and seasonings that appeal to you. Toss in a couple of chopped garlic cloves, a handful of torn fresh basil leaves, and a pinch or two of red pepper flakes or a minced chili pepper along with the thyme. Or add a can of drained and rinsed cannellini beans. Be creative. Let your imagination wander. Turn a soup into a hearty meal!