Preheat waffle iron. If you don't have a waffle iron then cooking them as pancakes in a skillet works just as well.

Combine flour, sea salt, and baking powder in mixing bowl.

Use whisk to thoroughly mix dry ingredients.

In separate bowl, combine egg yolks, water and melted butter, whisk or beat together.

Add liquid ingredients to dry and whisk together until a smooth batter is formed. (You may need to add more water to batter to get the consistency of a pouring batter. Not too thick and not too think)

In separate bowl, beat egg whites until they form soft peaks - firm but not dry.

Carefully fold egg whites into batter.

Using a glass or plastic measuring cup (aluminium causes batter to break down), pour about 1 cup of batter evenly into a waffle iron (1 cup for a 9inch square iron).

Waffles should cook in 10-14 minutes. If in doubt wait until steam stops rising from waffle iron before looking. Cook until crisp and brown.

Cool waffles on wire rack.