A Kiwi wine reviewer has slammed one of the country's best-known wine labels for its decision to start using Australian grapes in some of its wines.
Montana has ditched its award-winning Marlborough grapes for those from across the ditch to keep it cheap for consumers.
And many consumers looking for a well-priced New Zealand wine will not be aware of the change unless they check the back of the bottle.
At this stage the move is just for its Montana Classic 2017 sauvignon blanc and Montana Classic 2016 pino noir. Wine aficionado Bob Campbell wrote about his disgust in the move in his latest column online.
He dubs the move legal but "deceptive" and says the Montana brand is "as Kiwi as Buzzy Bee, Jaffas and Fred Dagg".
Montana was bought by alcohol distribution giant Pernod Ricard in 2010 and eventually renamed Brancott Estate to avoid confusion in the United States.
Montana's classic range has been selling for $9.99 recently, a price Campbell believed now justly depicts the quality of the wine.
Campbell said that although he is yet to taste the drop, there was a reason for the price difference.
"Australian sauvignon blanc is, by and large, inferior."
Campbell told the Herald Montana wine was close to his heart as he was working for it in 1973 when it planted its first grapes.
"I began my wine industry career in 1973 as an accountant with Montana so I guess it's kind of personal. I might be overstating the case but it's just that, to me, Montana and Marlborough are inextricably linked."
The sauvignon blanc was due to be released this month, he said.
He described Marlborough sauvignon grapes typically producing "punchy, aromatic, zesty, tropical" flavours, as opposed to Australian grapes having "much less" character.
He'd been in touch with Pernod Ricard, which had confirmed the company had been trialling Australian grapes for two of its wines last year. It was also keen to keep delivering good wines in the under-$10 category.
Pernod Ricard New Zealand managing director Kevin Mapson said increased demand and the rising costs of New Zealand grapes meant it was increasingly challenging to produce New Zealand-sourced wine that could be sold for under $10.
"By sourcing grapes from Australia, we can continue to make wines of the quality that Montana consumers expect at the same price point. This sourcing transition only applies to the Montana Classics and Montana Affinity ranges. All the other Montana ranges will continue to be made from New Zealand grapes," Mapson said.
He said the company had worked hard to minimise the change in style but said it was true Australian sauvignon blanc was less "aromatic" than that from Marlborough so would seem more "subdued" but disagreed the grapes were inferior to New Zealand's.
Mapson said the company had adhered to all the legal requirements for labelling so consumers were aware of the country of origin and were communicating the change to trade customers.
Over time most of the Montana Classic and Affinity wines would be made from Australian grapes, he said.
But he maintained the company was committed to its Kiwi heritage and had recently invested in the Montana Reserve range and that, along with its Montana Festival Block and Winemaker Series, would all continue to be sourced from New Zealand grapes.
Marcus Pickens, general manager of Wine Marlborough, said they were aware of the move and it would be discussed at their next board meeting.
He said there were rules in New Zealand around the labelling of wine, which Montana would be aware of, as there was evidence it caused confusion for customers.
NZ Wine Growers Association declined to comment.
When Montana wines made with Australian grapes will hit the shelves
• Montana Classic pinot noir 2016 - December 2017
• Montana Classic sauvignon blanc 2017 - January 2018
• Montana Classic chardonnay 2017 - August 2018
• Montana Classic merlot cabernet - August 2018
• Montana Affinity sauvignon blanc 2018 - November 2018
• Montana Affinity pinot gris 2018 - November 2018