Peel and halve the potatoes. Place them in a pot, cover with water, add a generous pinch of salt and bring to a boil. Cook for 25 to 35 minutes, until a knife slides in with no resistance. Drain well.
Mash the potatoes in a large bowl using a potato masher or a fork.
Add the eggs and mix well. Add the salt, black pepper and turmeric. Stir well to combine.
Add the flour one tablespoon at a time, mixing after each addition. The mixture should hold its shape when pressed but should not feel doughy.
Heat the oil in a nonstick pan over medium to medium high heat. The oil is ready when bubbles form around a toothpick held in it.
Wet your hands with cold water and shape one patty. Fry it for 3 to 5 minutes on each side, then taste it. If it falls apart, remove it with a slotted spoon and mix a little more flour into the batch. Adjust the salt if needed.
Shape the remaining mixture into oval or round patties with wet hands and fry in batches, 3 to 5 minutes on each side, until golden and crisp.
Transfer the patties to a wire rack to drain the excess oil. Serve warm with tomatoes, pickles and fresh herbs, or in lavash or a baguette.