Oli impressed the judges with his use of unusual but trendy produce like seawort and fig leaves. Chefs stick to seasonal produce for a reason – not only are things cheaper when they’re in season, they’re also at their most delicious. Check out our seasonal guide for December, and a few of our trend predictions for next year.

It’s easy to be scared away from lobster – it’s expensive, and intimidating if you’re planning on buying something live. Michael Caines challenged our first three semi-finalists to cook him a lobster dish, and all three delivered well. Check out our how to guide and our collection of lobster recipes for more on tackling this tasty crustacean yourself.

Michelle presented an ambitious dish to the chefs on Tuesday – a falafel dish with whipped feta, preserved lemon, cumin and onion. The final result was a little confused, says Marcus, and Gregg believed she could have been much bolder with her spices. When you’re dealing with heavier, spice-based cuisines like north African, Indian and Middle Eastern food, it often pays to go bold with your spices and aim to pack a punch, rather than being delicate.

Although duck is poultry, it should be treated more like red meat than white. If you overcook duck, it’ll go grey inside and the meat will be tough and chewy – the beauty of duck is in that bright shade of rose pink that should run through the meat when it’s perfectly cooked. Paul Ainsworth asked the second batch of chefs to recreate a duck dish, and Sean’s ended up a little bit over-cooked. Duck isn’t an easy meat to get right, but as always, the trick is in the preparation.

Laurence impressed Paul Ainsworth with his duck dish, but Paul mentioned that his vegetables would have been better pickled – that acidity would have cut through the rich, meaty flavours in the rest of his dish. When you’re cooking meaty dishes, think about whether there are elements you can pickle to provide extra acidity to balance out your flavours. In the meantime, check out our pickling guide.