The Cereal Killer Café is a temple to cereal on Brick Lane, east London. It serves only cereal — and also Pop-Tarts, which taste like pavements smeared with chocolate — and flavoured milk. It has been open for one month and is already famous for its monomania, its whimsy — look, cereal! — and its co-owner’s on-air fight with a Channel 4 News journalist about the morality of selling £3.50