Wash and dry the egg. Heat and spread the butter or oil in a frying pan.

After a moment, carefully crack the egg into the pan (be careful not to let any shell pieces fall in). Reduce the heat and cover the pan with a lid. Fry until the egg white sets and the yolk begins to thicken, which takes about 2-4 minutes.

Remove the cooked egg from the pan using a kitchen spatula or wooden turner. Place the egg on a plate and optionally season with a pinch of salt.