Katy Perry will appear on the new season of MasterChef Australia entitled “MasterChef – Back To Win.” Her episode will see an immunity challenge based on her song “Hot N Cold.”

According to new judge Melissa Leong, contestants ‘absolutely lost it’ when Perry unexpectedly arrived;

“What makes the MasterChef Australia kitchen so special? The fact that ANYTHING can happen! Cue Katy Perry serving us pop star realness and a dose of honest food-loving opinion as guest judge. A day that won’t be forgotten soon, that’s for sure.” Perry’s one day of filming involved tasting dishes and doing time calls throughout the immunity challenge. Sources tell TV Blackbox Perry was a delight on set who brought humour, laughter and happiness – reminding the contestants constantly that they were cooking for two and that “Mama was hungry”.

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