"I was a howly bag," Mrs Heke said of her crying.
Known for their banter and the "looks of death" they shoot each other, the gregarious couple found the new rules overwhelming.
"I was mentally down on myself before we even started cooking.
"We didn't know where we were going, who we were cooking for, we just knew it was for 20 people!"
Much to their surprise they were sent back to school, Pakuranga College in Auckland.
Each team cooked one course of a five-course degustation meal for 20 diners, 16 of which were students. "
Mrs Heke said they had little goals along the way, usually telling themselves "don't be the first ones to go home".
The teams were given mere hours to practise dishes before challenges and all teams lived together so there was no escaping.
"You need a lot of patience," Mr Heke said.