Professor Keith Woodford saw the potential in A2 years ago and is urging New Zealand dairy farmers to adapt their herds to produce the milk.
"The average New Zealand farmer still has not got the message and a few years down the track I think that's going to be a tragedy."
The former Lincoln University academic spoke to The Country's Jamie Mackay about the success of A2 milk and the past failure of dairy co-ops Fonterra and Westland to recognise it.
Originally Fonterra had a 50 per cent share in the key patent for A2, says Woodford but "they convinced themselves that A2 wasn't going anywhere."
Listen below: