New Zealand wine producer Mystery Creek Wines has launched a share offer to fund vineyard expansion.

Mystery Creek said the investment at its vineyards near Hamilton would almost triple capacity to 10,000 cases.

The company is hoping to raise NZ$2.5m (US$1.7m) and said the move would mean that it would not try to list on New Zealand's alternative stock market.

About NZ$2m from the float would go towards bigger winery buildings, buying equipment and frost protection, with most of the rest going towards working capital to use in raising capacity.