The Blues are terrified as they revisit their worst nightmares - Warm Pear Tart, Puddle Pie, Aria Chocolate Tart and Zumbo's Vanilla Panna cotta - whoever does the best job, gets $10,000 for their chosen charity.
Gary gives Poh some trouble for leaving her beautiful chocolate tart pastry hanging over the edge.
Gary has a word with Chris and tells him that his almond meal is too coarse and that his Macaron mixture is too thick.
Poh’s chocolate is unfortunately not tempering correctly and brings back memories from her first time around.
George is shocked to see Chris acting so professionally in the kitchen and it just goes to show what three years working in the kitchen can do.
The judges announce that Julie is the winner! Julie then valiantly suggests that she should split her $10,000 Charity prize with Poh's charity.
Competing as individuals, the All Stars are put up against the ultimate skills test - chopping 1 kg of onions.
Poh users her ultra fine onion chopping skills to reach the 1 kg mark first and puts her Blue team into Round 2 with the advantage.
The Blue Team's advantage means that they will have first dibs at cooking and improving the round 2 dish.
Even with Kate's meticulous clues, Kumar picks up the hint incorrectly and starts to create a pie instead of bolognese pasta. Luckily he soon realises the error.
Dani makes a critical error in combining the mince and the bacon together and soon figures out it was possibly the worst thing she could have done.
Poh was sceptical about how much sugar Julie was putting into the bolognese, but after tasting, she mentions that it is actually spot on.
Although the Blues had all the advantage, they still manage to win over the judges.
It's deja vu for the contestants as the judges reveal a world famous chef inspired Mystery Box.
The contestants face their first individual challenge as they channel their culinary heroes to create a dish worthy of their choice.
Jonathan panics when he sees pillowing pumes of dry ice escaping from the ice-cream maker. Luckily the judges step in to point him in the right direction.
The judges fight over who gets to try Marion's dish first.
The judges decide that Marion's dish is the winning dish with her Charity being rewarded with $10,000 donation.
The All Stars get ready for their first off-site challenge where they prepare to set the world on fire and feed the fire fighters.
After deciding on their protein of choice, the teams get ready to prepare the best sausage sizzle ever.
The Red Team had some initial reservations about their choice of duck for the challenge, but it's not long until the Red's figure out their secret flavour weapons.
The Blues decide to poach before they barbecue and as George explains, when fat, water and high heat mix, it make the sausages start to spit
Dani uses her secret spy skills to find out who her fire fighter customers are voting for
With the Reds and Yellows tied, the judges decide that the Reds were the winners of the perfect sausage sizzle challenge.
The All Stars prepare to receive instructions for their second challenge.
Julie and Kate engage in some good humoured psychological pre-challenge warfare.
Julie celebrates after winning the first round of the cook-off.
Poh, Marion and Dani get ready for the judges to taste their Chinese inspired dishes.
'Curry King' Kumar jumps into action in the third round.
Callum takes the final round of the epic team cook-off.