Sian Williams and Stefan Gates tuck into a hearty breakfast, as they turn their attention to some morning favourites. Supermarkets have developed copycat versions of some of the best-known cereals, but are they as good as the real thing? To try to answer that question, the White family pits the own-brands against the originals, while Stefan heads down to the farm to investigate how the huge range of eggs on offer are produced, from caged to barn to organic.