In a large mixing bowl, mix together sourdough starter, milk and eggs until well combined.
Pour in the melted butter and stir through the starter mixture.
In a separate bowl, mix together all purpose flour, cocoa powder, chopped chocolate, salt, baking powder and sugar.
Now pour the liquid ingredients into the dry ingredients.
Mix until it forms a thick batter (it will be quite marshmallowy).
Heat up your waffle iron and spoon mixture into the iron. Cook to your liking - I recommend cooking them until they're crispy!
