Preheat waffle maker to medium-high heat. Preheat oven to 200 degrees F. In large bowl, whisk together egg yolks, buttermilk and butter. In small bowl, stir together flour, baking powder, baking soda, salt and sugar; whisk flour mixture into buttermilk mixture.
In separate medium bowl, whisk egg whites until soft peaks form. Using rubber spatula, fold egg whites, parsley, sage and rosemary into buttermilk mixture until just combined. Do not overmix.
In batches, transfer waffle batter to waffle maker and cook until golden brown and crisp, according to waffle maker instructions. Transfer waffles to wire rack set on baking sheet and keep warm in oven while cooking remaining waffles.
This website provides estimated nutrition information as a courtesy only. You should calculate the nutritional information with the actual ingredients used in your recipe using your preferred nutrition calculator.