A boutique grocery has called for help to bottle its own milk in a bid to keep prices at $1 a litre.
Last month Nosh Food Market cut the price of milk to $2 for two litres in what it said was a protest against steep industry mark-ups.
The discount was extended to the end of this month but the grocer is now looking for ways to reduce the loss "well in excess of 50c" on each bottle it sells.
"There are only a few processors of milk. It is an area where I would like to see more competition to ensure consumers are getting a good deal," Nosh director Clinton Beuvink said.
Nosh's milk is processed and bottled by Goodman Fielder, which with Fonterra is the biggest bottler of milk, he said.