Knockout Week draws to a close as the week's best cooks return to compete for a place in this year's semi-finals. This is the sharp end of the competition, so it will take bags of self-belief and some perfect plates to get there.What better way to celebrate MasterChef's 20th birthday than with some canapes? The contenders need to create sweet or savoury bite-size chunks of loveliness that would elevate even the most sophisticated of parties. With just under two hours to come up with nine identical portions of canape heaven, they need to produce morsels that would have the most seasoned party-goers clamouring for the silver trays.The one who doesn't bring the party as much as the rest will be sent home, leaving the rest with a huge sense of achievement as they sail into the semi-finals, one step closer to becoming MasterChef champion 2024.