Finely chop onion and garlic cloves, sauté in olive oil until translucent. Dice the zucchini, add and sauté briefly.
Add vegetable soup, lightly simmer for a few minutes (the zucchini cubes should still have bite). Season with oregano, pepper, salt. At the end add a little bit of balsamic vinegar (Aceto Balsamic Vinegar).
The aceto balsamic vinegar gives the soup a very special zing.
Tip: The flesh of young, small zucchini is much more tender than that of larger ones.