Halve the zucchini lengthwise and dice, chop the spring onions, cut the tomatoes into wedges. Peel the peppers and cut into lozenges.
Sauté the vegetables one by one in olive oil, season lightly with salt and season with pepper. Then put them together with the olives and herbs in a large enough bowl.
Mix olive oil, salt, vinegar, pepper and sugar to make a salad dressing. Mix with the lukewarm vegetables, leave for about 10 minutes and serve with grilled fish or meat.
Our tip: As an alternative to fresh herbs, you can also use frozen ones – these are also characterized by a fresh taste!