MasterChef Australia is an Australian competitive cooking reality show based on the original British MasterChef. It is produced by Endemol Shine Australia and screens on Network 10. Restaurateur and chef Gary Mehigan, chef George Calombaris and food critic Matt Preston served as the show's main judges until 2019, when they were replaced by Series 4 winner and chef Andy Allen, food critic Melissa Leong, and restaurateur and chef Jock Zonfrillo.

Matt Preston is an English-Australian food critic, writer, food journalist, television and radio presenter. He is best known for his role as a judge on Network Ten's MasterChef Australia between 2009 and 2019, and Seven Network's My Kitchen Rules in 2022. He also has a weekly national food column that appears in NewsCorp's metro newspapers. Preston is also a senior editor for Delicious. and Taste magazines, and the author of at least four best-selling cookbooks. Since 2022 Preston hosts Saturday Mornings on ABC Radio Melbourne.