MasterChef An immunity challenge with a twist. 2026-06-12 Power Week. The elimination challenge will take place over two rounds. 2026-06-12 Power Week. The elimination challenge will take place over two rounds. 2026-06-12 Today's mystery box challenge has been set by the great Heston Blumenthal. 2026-06-12 The judges reveal that the pressure test has been set by celebrated chef Guillaume Brahimi. 2026-06-12 Today the three contestants who impressed in Heston Blumenthal's invention test cook for immunity. 2026-06-12