For a richer flavor, try roasting the vegetables before adding them to the broth. Roasting brings out their natural sweetness and adds a depth of flavor to the soup. A swirl of vegan cream or coconut milk can add a luxurious touch to the finished soup. Alternatively, a squeeze of fresh lemon juice can brighten the flavors. This soup can be stored in the refrigerator for up to 3 days or frozen for longer storage. Reheat gently over low heat, adding a little more broth if necessary to thin it out.