01 - Gently toss mixed berries with 1 tablespoon sugar and lemon juice in small bowl. Set aside to macerate while preparing pancakes.
02 - Whisk together flour, sugar, baking powder, baking soda, and salt in large mixing bowl until well blended.
03 - Combine ricotta cheese, milk, melted butter, egg yolks, lemon zest, and vanilla extract in separate bowl. Mix until smooth and creamy.
04 - Add ricotta mixture to dry ingredients. Mix gently until just combined, being careful not to overmix.
05 - Beat egg whites in clean bowl until soft peaks form. Gently fold whipped egg whites into batter until fully incorporated.
06 - Heat nonstick skillet or griddle over medium heat. Lightly grease with butter.
07 - Pour 1/4 cup batter per pancake onto skillet. Cook 2–3 minutes until bubbles appear on surface and edges look set. Flip and cook 1–2 minutes until golden and cooked through. Repeat with remaining batter.
08 - Stack pancakes on plates. Top with macerated berries. Drizzle with maple syrup or sprinkle with powdered sugar if desired.