Over the past few weeks, the issue of changing the payment system for milk in NI to one based on solids (A+B-C) has again been raised.To put the issue in simple terms, take a scenario where two cows produce the same total kilos of fat and protein, but cow 1 yields 6,000l of milk, whereas cow 2 yields 7,000l. Clearly cow 1 is producing milk of higher value, but in the NI payment system, cow 2 generates a significantly higher financial return to a farmer. The signal being given is to produce water rather than solids. It isn’t logical.