Heat the oil in a heavy-bottomed pan. Fry the potatoes until browned and crisp and cooked through. Remove and set aside, leaving the oil in the pan.
Fry the hot dog slices in the oil until browned. Remove and set aside, leaving the oil in the pan.
Sautee the onion slices in the oil until they are well wilted and translucent. Add the garlic and spices and fry a few minutes more until fragrant, deglazing with some of the water if necessary.
Add the tomato paste and stir in, using a little more of the water to loosen up the mixture if necessary.
Cook until reduced to a thick paste. Season with salt and papper.
Serve on long bread rolls with thin slices of tomato and Persian pickled cucumbers and romaine lettuce