Cambridge Road is the only winery in the country that produces ceramic-aged wine, using a specially made, egg-shaped vessel that lets the wine slowly interact with the oxygen around it, while retaining the flavours of its small home vineyard.
Eventually, Mr Redgwell hopes to integrate native timber into the heads of the oak barrels the winery uses.
While New Zealand's earliest winemakers coopered their own conditioning vessels from native timber with the skills they brought here, that art had long since been lost, he said.
"It would be lovely if we could bring to New Zealand someone with the skills to achieve that - the alternative being taking timber and sending it to Europe to have it crafted. We do have a strategy to achieve it, and it would be a first ... but it's something that is yet to be put into print, so to speak."
Featuring alongside Cambridge Road's wines will be more than 200 others from around the country, spanning a range of varietals. The festival also offers food and wine pairings, blind tasting seminars, master classes by master sommelier Cameron Douglas and Viva wine editor Jo Burzynska and a two-course set lunch created by Matterhorn head chef James Pask.
Event founder Ash Lomberg said: "This event allows visitors the opportunity to sample a wide variety of great wines in a single venue."