Halve the tomatoes, remove the insides and save for the dressing. Then cut the tomatoes into wedges. Quarter and core the peppers and cut into strips. Fillet the orange, cut the fillets into small pieces. Catch the juice and use it for the dressing. Halve the onion and cut into fine rings.
For the dressing, crumble the bay leaf, moisten the crumbs a little with water and chop finely with a knife. Mix with the remaining dressing ingredients in a shaker and let steep for at least 10 minutes. Pour the dressing over the salad, mix well and let steep for 2-3 minutes.