It had also been a reflection of Hawke's Bay's much-vaunted wine industry and ability to create wines which hit the mark - all year round.
"We thought that increasing production by 30 per cent was a bold move but the demand continues to overshadow supply - so it is an exciting problem to have," Ms Clarke said.
"Here we are in the same position as previous years, nearly sold out before the next vintage is ready, although in previous years it was all gone months before bottling."
She said the winery was down to less than a pallet of the 2014 and she had found herself in the position of having the carefully ration distribution until the 2015 was set to be bottled this week.
Like the 2014, the volume of the 2015 ros vintage was also up by a third and she said the orders were already arriving.
When she started at the winery about five years ago the market was different.
She said a winemaker had told her that "no one can sell a ros in winter" and that it was seen as a summer drink.
"But that trend has changed and it is now one of the most drunk varieties all year round."
The Black Reef Blush is derived from traditional red grapes grown on the Te Awanga vines as well as from a French hybrid grape called chambourcin.
It has picked up gold medals at the Air New Zealand Wines Awards.