Bring a pan of water to the boil, adding a tiny splash of vinegar to help set the egg white.
Fry the bacon in a frying pan over a medium heat until crispy then set aside.
Heat the butter in the bacon frying pan, add the purple sprouting broccoli and fry until just tender, 4–5 minutes. Toast the bread.
While the broccoli’s cooking, turn the heat under the egg pan down so