Finely dice the cucumber and tomatoes, cut the spring onions into thin rings. Put everything in a sieve, sprinkle with 1/4 teaspoon salt and let water soak for 5 minutes. Then rinse and drain. Put in a bowl and mix with chopped mint. Season to taste with salt, pepper, sumac and / or pul biber.
Drain and roughly puree the chickpeas. Season with cumin, garlic, olive oil, lemon juice, tahini, salt and pepper.
Briefly heat the tortillas in the microwave or in a pan (then they are easier to roll up) and brush each with a little chickpea mixture. Leave an approx. 2 cm wide border free. Put the tomato mixture in the center and roll up the tortillas tightly.