A new battle for milk is about to commence in the United States as dairy co-ops and processors open $7bn (€6.4bn) worth of new dairy processing capacity. The new investment, which is primarily in cheese making and whey processing is set to come on stream over the next 18 months. However, according to the National Milk Producers Federation (NMPF) farmers will be under pressure to supply enough milk to keep existing and new plants running.