Wash the potatoes thoroughly. Cook in boiling water for about 20 minutes. Drain, quench, peel and let cool off. In the meantime clean and wash the peppers. Cut 1/2 pod into strips and put aside.
Finely dice the rest. Separate eggs. Peel garlic and press it through a garlic press. Wash the thyme and dab dry. Put something aside for garnishing. Pluck the remaining leaves from the stalks.
Mix egg yolk, milk, garlic and thyme, season with salt and pepper. Dice the potatoes. Fold potatoes and diced peppers into the egg mixture. Beat egg white until stiff and fold in. Heat 1 tablespoon of oil in a pan (26 cm Ø).
Add the tortilla mixture, cover and let it simmer at low heat for about 20 minutes. In the meantime, clean, wash and pat dry the salad. Cut olives into rings. Season vinegar with salt and pepper.
Whip the oil underneath bit by bit. Mix salad, pepper strips, olives and vinaigrette. Turn out the tortilla onto a plate, cut into pieces and garnish with thyme. Serve with salad.