Kelloggs In Giant Product Recall

Kelloggs is voluntarily recalling what some media reports suggest could be "as many as 28 million boxes" of cereals in the US that could cause nausea and diarrhoea.

The problem, they say, is due to "an uncharacteristic off-flavour and smell coming from the liner in the package."

Link here: Cocoa plops?

I wonder how much corn it takes to replace 28 million boxes of breakfast cereal? Answers on a postcard please.