Finely shred potatoes and apples, pat dry. Combine in a bowl with the eggs, onion, flour and salt. In a skillet,
heat ¼ – ½ inch oil over medium high heat. Drop batter by heaping tablespoons into hot oil. Flatted to form 3-in pancakes. Fry until golden brown, turning once. Drain on paper towels. Serve immediately with sour cream