Clean the excess fat parts of 300 grams of beef entrecote and cut into small cubes.
Add enough cold water to cover it and boil it until it absorbs the water.
Heat the wok or iron plate on the stove.
Pour 2 tablespoons of cotton oil (or olive oil) into the pan and add the boiled meats.
Pour 1 cup of water mixed with 1 teaspoon of red pepper powder over the meats from time to time.
Wait until the meats are drained.
Take the 2 green peppers, which you cut in half and remove the seeds, into the pan and start roasting.
After the peppers are roasted, take the lavash or sandwich bread you will serve, and soak them by pressing on the meats.
After adding the 2 tomatoes, chopped and peeled, continue the cooking process for a short time, stirring occasionally.
Place the cooked tantuni in sandwich bread or lavash, add the onion with sumac and consume it by squeezing lemon if you wish.