Self-styled serious siblings Amy and Tyson Murr quickly made a name for themselves in season eight by snapping up the highest instant restaurant score in MKR history. 

But it wasn't their weird cuts of meat or alcohol-inspired sorbets that helped them take home the top gong from rivals Valerie and Courtney. Speaking to Fairfax Media the morning after their victory, the Queenslanders said it was their commitment, time management and ability to work together that helped them sail over the finish line. 

"We're still in a little bit of shock," Amy said. "We're just trying to soak it all in. The finals were tough ... you could create your best dish and someone could still go home. We have so much respect for all the other teams." 

Throughout season eight, Tyson was framed as someone who at any moment could transform into an "angry, angry man". However, after a pep talk from judges Pete Evans and Manu Feildel, the former Uber driver realised he had to reign in his emotions if he was going to have any chance of winning MKR. 

"Pete and Manu told me you can use the stress and pressure of a kitchen to create great food," he said. "I learnt to control my anger. You don't have to get angry about it."

This transformation was apparent when Tyson's short-lived villain edit melted away in favour of someone who was willing to poke fun at himself and joke around in the kitchen. 

As for what other tricks the siblings had up their sleeves in order to make it into the grand final, Tyson said he and his sister worked on their time management skills. 

"We knew what we had to do cooking-wise, it was just about making sure we were doing the right thing at the right time," he said. "That's what really helped us stay calm and relaxed with our cook."

Meanwhile, Amy also suggested her and her brother's ability to work well as a team helped carry them towards the finish line. While other teams buckled under the pressure and made errors that sent them packing (sometimes early on in the season, and sometimes nail-bitingly close to the finale), the serious siblings stayed on target until the final episode. 

"We couldn't have done it as individuals," Amy said. "You need to compliment each other's skills. I was definitely the bossy project manager and Tyson the technical cook - that worked well for us."

So what's next for the serious siblings? Well, Tyson won't have to worry about shepherding around drunk Uber passengers any more - he's snapped up an apprenticeship at a restaurant at Brisbane's West End. 

As for Amy, she said she's going to support her brother's "food dreams" 100 per cent. However, while "nothing immediate" is in the works, the pair are exploring the idea of developing a dessert range. 

Amy and Tyson wowed the judges towards the end of the competition with sorbets inspired by liquors such as gin and Pimms. 

"People seem to love the idea of our desserts," she said. "We're toying with some ideas to bring that to the wider population. Watch this space."