Process
Preheat the waffle iron. Take a medium-sized bowl and sift flour, salt, and baking powder in it, and set aside. Take another bowl, add egg yolks to it, beat with the help of a wooden spoon, and then add in sugar. Mix until sugar is dissolved. When the egg turns pale yellow, add in milk, vanilla extract, eggs, and melted butter; whisk to combine. Add this concoction to the flour mixture until slightly blended. Do not over mix. Set aside.