Mom's Waffles

.
4 eggs, separated
... beat the egg whites
... beat the yolks
Add to the yolks 2 cups milk
Stir together:
... 3 cups flour
... 1 tsp salt
... 2 tsp sugar
... 4 tsp baking powder
Mix the dry ingredients with the milk mixture.
Fold in 2/3 cups melted butter.
Fold in the egg whites.