Combine the beaten egg, milk, sugar, cinnamon, and flour. Mix well and add sour cream. Heat 2 tablespoons oil to 375 degrees. Dip pears in batter, carefully place in oil, and cook 1-2 minutes. Turn and cook 1-2 minutes more. Add oil as needed. Remove fritters and drain. May be sprinkled with powdered sugar or cinnamon sugar. Serve warm.