Heat the tomato mix gently through, add a few drops of balsamic vinegar. Add halve of the softened cubed zucchini and garlic and the two anchovy filets if using them to the soup and blend into a smooth soup, then add the other halve of cubed zucchini and garlic, leaving them intact, into the blended soup, season with all the spices, herbs and salt until a taste to your liking is established. I like mine with quite a bit of spicey heat.