Eggs are a great source of protein, iron and vitamins, and they're easy to cook
Delia Smith, a famous British cookery writer and TV chef, was criticised by professional chefs when she wrote a book containing a recipe for boiled eggs.
But many ordinary people were grateful to receive such instructions.
Since the demise of cookery lessons in the UK, the majority of school graduates lack the basic skills to cook for themselves at university.
So how do you cook the perfect boiled egg?
According to Delia Smith you should take the egg out of the fridge and let it come to room temperature. Next, place the egg in a small saucepan and add enough cold water to cover the egg by one centimetre.
Put the saucepan onto a high heat and, once the water has boiled, reduce the heat to low and let it simmer for three to five minutes, depending on how soft you want your yolk. If you want a hard-boiled egg, then simmer it for seven minutes.