"People sometimes don't believe their own produce is world-class until someone from overseas with an accent, tells them it is. In this case, it was a large American judging panel."
Oamaru Maturation Store manager Debbie Preston said the whisky, in addition to being sold in Oamaru, was exported to Australia, the United States and the Netherlands, and had a growing reputation overseas.
"We have really cranked up the exports, and we are just preparing an order for Canada."
Former NZ Whisky Company director John Evans, who helped organised the purchase of the whisky and who now promotes aged Willowbank whisky to cruise ships coming into Dunedin, was not surprised by the award.
The whisky produced at the Dunedin distillery had always been a high-quality product, he said.
"As Dunedin has fine barley, peat and still pure water from local sources and a Scottish heritage it is no surprise that the aged whiskies are first class.
"The opportunity for Dunedin businessmen is to go back to the heritage and distil more to take advantage of these accolades, the supply is running out."