In a bowl whisk the buttermilk, melted butter and vanilla extract.
Separate the egg and whisk the egg yolk into the buttermilk mixture.
In a separate bowl whisk the egg white until it forms stiff peaks.
Weigh the remaining dry ingredients into a bowl. Sieve them into the buttermilk bowl and whisk together.
Carefully fold the stiff peaked egg white white into.
Cover with a clean tea towel and leave for 15 minutes to thicken up.
Turn on the waffle iron so it gets up to heat.
Lightly oil the waffle iron and add a good scoop to each section (judge per your own waffle iron).
When they're golden brown remove from the waffle iron and spread over a thin layer of nutella/chocolate spread.
Decorate with fresh berries and serve.