After much wrangling, it looks like Ornua’s milk price tracker, the Purchase Price Index (PPI), is set for a revamp, with co-op bosses calling for the assumed cost of processing milk to be increased. Since its inception, the PPI has become a key benchmark for Irish farmers in terms of milk price transparency. The PPI tracks the market returns of the typical mix of Irish dairy products such as butter, cheese, whole milk powder and protein products. It then translates this into an estimated farmgate price for milk, giving farmers a decent idea of what milk price they can expect from their co-op.