Steps
- Heat the waffle iron to maximum temperature.
- Make a brown butter. Once it reaches the right color, let it cool with the milk and vanilla.
- Meanwhile, whip the egg whites to stiff peaks, tightening them with the sugar.
- When the liquids have dropped to 40-50°C, pour them slowly over the dry ingredients while whisking to avoid lumps.
- Fold in the egg whites in 3 additions.
- Cook, without greasing the plates.