Four hopefuls, shortlisted from 2,000 aspiring chefs, battle it out to be the best cook in the country. After a scrumptious masterclass in sponge pudding, the four cooks try their hand. Will their sponges rise to John and Nadia's expectations? With a quarter-final place up for grabs, the competition reaches boiling point as they go all out to impress with their dishes. Will the baked salmon, the lemon cheesecake, or the meringue roulade win over the judges?