Semi-final - Patisserie

S5, E9: It's semi-final time and the tension is palpable as the bakers begin Patisserie Week. The semi-finalists are challenged to make signature baklava - two different types of any flavour they like, but with the crisp flaky layers of perfectly pulled filo pastry. Next up is the penultimate technical challenge of the series, which sees the bakers make layers of a different kind.