To make the waffles
Mix the yeast, milk and water together.
Beat the egg yolks by hand or in a food processor until frothy and fold into the mixture. Add the flour and whisk the batter until light and fluffy. Now beat the egg whites by hand or in a food processor until frothy and carefully fold into the batter.
Add butter and a pinch of salt. Cover the batter with a damp towel and leave to stand for 45 minutes at room temperature.
Spoon the batter with a soupspoon in a hot waffle iron. Bake the waffles until golden brown.
To make the whipped cream
Beat the cream with a pinch of icing Sugar until firm. Spoon the cream into a piping bag.
Pipe the whipped cream onto the waffle and decorate with strawberries and different shapes of cookies or chocolate, if desired.