"We could have brought a brewery from China but this is a lot more fun doing it this way, and probably a whole lot more stressful.
"It's still very exciting."
At the moment all the brewing was done in a small unit in Frederick St, but the demand for the beer meant the two former professional abseilers needed somewhere larger.
Once completed, the brewery will produce about 1200 litres at a time, with a capacity of about 300,000 litres per year, 10 times the amount they are able to brew now. They would not need all the capacity straight away but it gave the brewery room to grow, if the demand was there, Mr Boyes said.
"Our goal for the first year is to hit about 90,000 litres, which means ... we were being paid and the company had enough cash to keep growing."
Mr Boyes said they would look to start distributing around the country.
"We are going to need to go outside of Wanaka and we have had so much interest from people in Wellington and Auckland.
"We want to do that but distribution is going to be difficult to work out."