Working in batches, heat 2 tablespoons oil in a nonstick skillet over medium-high heat. When the oil is hot but not smoking, gently drop 2-tablespoon mounds of potato mixture into the skillet, pressing gently to flatten. Fry the latkes until crispy, about 3 minutes per side. Drain on paper towels and keep warm in the oven. Garnish with Green Apple and Fennel Relish and serve.