With a clean bowl and whisk, beat the egg whites into soft peaks. Fold the egg whites through the batter.
Pour enough oil into your pan so that you've got about 3-4cm deep. Turn the heat on and after a couple of minutes add the little piece of bread. Once it fizzles and pops, the heat is correct.
Dip each green bean in the batter so that it gets a lovely thick coating. Don't fry more than about 7 or 8 at a time.
Be like Rachel - hand out little fritte, blowing on them, dipping in a little salt and enjoying a cold beer or prosecco at the same time.