Instructions:

1. In a large mixing bowl, combine the chopped leeks, grated potatoes, breadcrumbs, beaten eggs, salt, and pepper. Mix well until all ingredients are well combined.
2. Heat olive oil in a large skillet over medium-high heat.
3. Once the oil is hot, scoop out portions of the leek mixture and shape them into patties.
4. Carefully place the patties in the hot oil and fry for about 3-5 minutes on each side, or until they are golden brown and crispy.
5. Remove the patties from the skillet and place them on a plate lined with paper towels to drain excess oil.
6. Serve hot, garnished with a dollop of yogurt or sour cream if desired.