Is this giant potato the heaviest in the world?

(CNN) – A New Zealand couple may have grown the largest potatoes in the world without trying.

Colin and Donna Craig-Brown, both from Nagahinapuri in the Waikato region, found their tubers growing in their garden as they prepared for the spring planting season.

“It’s one of nature’s wonderful wonders,” Colin Craig-Brown told CNN subsidiary Radio New Zealand. “I do not know if it grows there, I do not know how long it has been, because I have been walking on it all last cucumber season.”

The potato, named for the “duck” pair, weighs 7.9 kilograms and may be the world’s largest. Peter Glasbrook, a British vegetable farmer, set the current record by recording a potato weighing 4.98 kilograms in 2011.

While Craig-Browns is still waiting for an update on the Guinness World Records, Duck has already lost a kilogram in the freezer, meanwhile it is being stored.

A large potato on top of a toy truck at the home of Donna and Colin Craig-Browns. (Donna Craig-Brown / AB)

Craig-Brown told Radio New Zealand’s Jesse Mulligan, “He’s happy in the freezer.”

However, Duck’s presence was initially a bit shocking because the pair had not started growing a large potato, and his appearance was very strange. Craig-Brown describes large potatoes as an “undesirable” thing.

“I didn’t know what it was until I stuck the garden fork in it, pulled it out of the ground, and tasted it a little bit,” Craig-Brown said.

The interest in Duck was huge and somewhat unexpected, which led to Craig-Browns having “crazy” week.

“Once we dug it up, everyone looked at it, pushed it, squeezed it, and all that stuff like that, we just put it around and put it on Facebook. It’s kind of fun,” Craig-Brown said. “They call it a virus.”

As Duck’s fame fades, the plan to turn him into some vodka, says Colin, is the “perfect departure.”

“We’ll make him an awareness and toast the duck with the vodka I’m going to make with him,” she said.