They drink raw milk themselves and their two small boys have been brought up on it, they said.
The new herd of 25 cows have all been tested and have the A2 beta-casein protein rather than the more common A1 protein, they said. "Once you've drunk raw milk pasturised milk tastes like water."
The process of milking the special herd could take as long as their daily milk because the preparation criteria for these cows are so stringent.
Each teat has to be checked and cleaned religiously, Jo said.
"There's no room for error at all. Any cow we even suspect of not being well won't be milked."
The distribution shed on the corner of their property at the junction of Goodson Rd and Glover Rd in Hawera is nearly completed.
The milk will be sold in one litre glass bottles. The couple are convinced the raw milk will become very popular, very quickly. "It's so delicious that's why," Jo said.