Halve bread and spread cut sides with mayonnaise

Use a fork to whisk eggs, milk and chilli flakes in a bowl until just combined. Set aside for a few minutes to allow foam to settle

Heat a medium non-stick frying pan over medium heat. Add butter, melt and swirl to coat pan base. Add egg mixture and cook without stirring for 30 seconds

Using a wide spatula, push the set eggs around outer edge toward the centre of the pan, tilting the pan to allow the uncooked egg to run over the base. Gently push eggs around pan every 15 seconds until soft folds form and one quarter mixture is unset. Remove from heat

Gently fold the egg mixture once more. Divide scrambled eggs and rocket between bread. Season and serve