Beat eggs for 6 minutes more on a highly faster speed, or until tripled in volume and almost pure white.
When the egg is whipped, scatter 1/3 flour across the surface, then beat on low for 5 seconds. Stop beating, add half the remaining flour, then mix again on low for 5 seconds. Add remaining flour, then mix on Speed 1 for 5 – 10 sec until the flour is just mixed in. Once you can’t see flour, stop straight away.