Crack the egg into a large bowl, then tip in the flour and a generous pinch of salt.

Brush oil on the waffle maker. Heat the waffle maker till the light turns green.

Add the sugar, if using, then gradually whisk in the milk followed by the melted butter until smooth. Whisk in the vanilla, if using. Alternatively, make the batter by blitzing all the ingredients together using a blender or hand blender.

Ladle in enough batter to cover the surface.

Cook for about 5 minutes.

Serve while warm with a drizzle of golden syrup.