Grace Jupp

The judges are joined by special guest Jamie Oliver, as the contestants prepare for a season of secrets and surprises.

Jamie Oliver returns to present the contestants with two difficult challenges: a 15-minute meal and his mushroom and spinach rotolo.

The chefs embark on a two-day challenge. On the first day, they have 45 minutes to marinate the base of their dish and develop the flavour. The next day, after 14 hours, they have one hour to finish their dishes.

Contestants must choose one of three ingredients that have inspired the judges during their childhood, including Andy's Vegemite, Mel's kumquats or Jock's panettone.

It's Grand Finale Day and whichever cook scores the most points across two rounds will lift the trophy aloft, claiming $250,000 in prize money and winning the title of MasterChef Australia 2023.

The cooks compete in the first Service Challenge of the season. Two teams, aided by mentors Matt Sinclair and Sashi Cheliah, must cook an entrée and a main course dish for 30 diners.