According to McCashin, most breweries already produced lower acohol beers with an alcohol volume of between 3 and 4 per cent, but it was the low alcohol - 2.5 per cent or less - that was the most challenging to brew.
"Some breweries have recognised the market potential for low alcohol beer and stepped up development," McCashin said.
"That said, brewing a low-strength beer that tastes good is still exceptionally hard to do because of the time, innovation and investment required. The lower the alcohol content the harder it is to brew."
McCashin said more brewers were seeing the opportunities in low alcohol beer, with Croucher Brewing's 2.5 per cent Lowrider beer now its second best seller.
Sales of low alcohol beer have doubled in the past two years but the category still only accounts for about 5 per cent of all beer sales in New Zealand. In Asutralia, low alcohol beer sales are around 20 per cent of all beer and McCashin said she expected New Zealand's market to follow this trend.
"Brewers have to experiment and take risks," she said. "In some respects, a quality low alcohol beer can define just how good a brewer really is."