Peel, wash and dice the potatoes. Heat 4 tablespoons of oil in a large ovenproof pan. Fry the potatoes for 15-20 minutes while turning. Peel and dice onions and garlic and add to the potatoes after about 10 minutes.
Preheat oven (electric cooker: 200 °C/circulating air: 180 °C/gas: see manufacturer). Whisk eggs, season with salt and pepper and pour over potatoes. Place the pan in the oven and let it stand for 15-20 minutes.
In the meantime, sort the salad, wash and spin dry. Wash and halve the tomatoes. Mix vinegar, salt, pepper and honey. Fold in 3 tablespoons of oil. Mix salad, tomatoes, olives and vinaigrette. Turn out the finished tortilla, cut into pieces and serve with the salad.