In a large bowl, beat together egg yolks, ricotta, sugar, lemon zest, butter, and milk. Whisk in flours and baking soda. Using an electric beater, whip egg whites until soft peaks form. Gently fold egg whites into yolk mixture until just combined.
2. In a medium saucepan, combine peaches with maple syrup, lemon juice, and salt and bring to a boil. Reduce to a simmer and cook 10 minutes or until peaches are slightly softened.
3. Lightly grease a griddle and heat over medium-high heat. Pour ¼ cup of batter at a time to form circles. Cook 2 to 3 minutes or until edges begin to bubble. Flip and cook 2 to 3 minutes more or until golden brown. Keep warm in a 200°F oven, warming drawer, or on a plate tented with foil while
continuing with remaining batter.
4. Serve pancakes with peach syrup on the side.