For the Tahini dressing, mix sesame paste with garlic, lemon peel and juice, orange juice, honey and black pepper. If the dressing is too thick or grainy, simply dilute it with water by the spoonful until a creamy consistency is achieved.
Finally, carefully stir in the olive oil and season to taste with salt and pepper if necessary.
For the salad, heat the olive oil strongly in a large coated pan. Fry the zucchini slices in it in portions for a few minutes until they are soft and browned on both sides, turning occasionally.
Put it in a bowl. When all zucchini are cooked, season generously with salt and pepper. Add lemon juice and chilli and mix well.
Place the beans in boiling salted water, bring to the boil again and blanch for 1 minute. Drain, rinse in cold water, drain and pat dry. Mix the beans with the zucchini.
Line a large flat bowl with the lettuce. Arrange zucchini, beans, tomatoes and chopped mint on top. Drizzle everything generously with tahini dressing.