With breakfast in decline, Kellogg created Nutri-Grain, a vitamin-fortified substitute for eating on the move. It comes in four fruit flavours, strawberry the most favoured by children. Sales now exceed 140 million bars, worth £30m. A new cherry flavour is being backed by an £8m promotional spend. Rice Krispies Squares with marshmallow has become a children's favourite, says the company. {{FOCUS SPECIALS }}