This week's seven best home cooks from the first round return to test their culinary wits and show judges John Torode and Gregg Wallace that they have the potential to be MasterChef champion 2022.

Tonight's first task is the Market Challenge, with the seven having to invent a dish on the spot using a marketful of ingredients, including whole mackerel, squid and pork tenderloin.

The pressure is on to impress because at the end of this test one contestant will be sent home. The remaining six then face their most demanding assignment so far - cooking a dish to a brief set by one of the country's toughest food critics, Grace Dent. Grace has asked them to cook a dish centred around one of her favourite ingredients, the humble potato.

In a competition where only the food matters, and with just four places up for grabs, these amateurs will need to be good to make it through to the quarter-finals.

It's the third week of heats, and nine home cooks arrive with both their dreams and ingredients ready for their first test, the Audition Round. This year's auditionees come from all over the UK and must start by cooking a signature dish that shows John and Gregg who they are as a cook and how good they could become.

John and Gregg don't witness them cook in the MasterChef kitchen. Instead, they taste each dish in the new Tasting Room. Just like diners in a restaurant, they judge each contestant's food solely on the plate that is put in front of them. After tasting all nine plates, John and Gregg pick their three favourite dishes, awarding those cooks a MasterChef apron and immunity from cooking in the next round.

For the remaining six contestants, there is another chance to impress the judges and win themselves a coveted apron. If they cooked a savoury dish in the first round, they must deliver a sweet dish now, or vice versa. This time, John and Gregg are in the kitchen witnessing their every move. The pressure is intense and the stakes are high as only four cooks can join the three already fast-tracked in the next round of challenges. For two, their MasterChef dream will be over.