The team take a good look at 'superfoods'. Do pomegranates help with Alzheimer's? Can rosemary increase focus for teens at exam time? Will kefir improve mood? And what about histamines in food?

Matt Tebbutt reports from Argentina on the price of sunflower seeds. Amanda Byram is in Yorkshire's rhubarb triangle, where she investigates how forced rhubarb can grow in complete darkness. Plus, Andi Oliver reveals how much added sugar goes into takeaway milkshakes.

The team lift the lid on al fresco food. Does using marinades or dry rubs make a difference to your meat? Plus: halloumi, fruit salad, edible charcoal and more.

Jimmy Doherty puts some of the UK's most popular soft drinks under the spotlight, and uncovers the shocking truth about the levels of so-called microplastics some contain. Kate Quilton meets a Devon resident who loves to eat nettles, and Amanda Byram learns why some foods such as rhubarb and custard seem so inseparable.

The team tracks down fascinating facts from around the world related to the growing British tradition of savouring takeaway food, on which a billion pounds is spent a month. Jimmy Doherty is in Thailand to discover the unexpected addition in spring rolls. He then heads to India to find out the real reason takeaway curry can be so delicious - the mythical ingredient, ghee. Amanda Byram spills the beans on coffee and learns why some cups leave consumers more `buzzing" than others. Andi Oliver has the meaty task of learning how doner kebabs are made and bags herself an invite to the fancy award ceremony known as the Kebaftas.

More fascinating food facts from around the world, including the role of candy floss in an astonishing food revolution in the US. Plus: crayfish trapping, and brie.

Jimmy investigates turmeric in India and Kate finds out how much milk is in chocolate, while Andi draws the short straw and investigates asparagus and pungent pee problems.

Jimmy Doherty is in Thailand asking how the blossom from a banana tree is shaking up fish and chip suppers. Matt Tebbutt visits Spain to find out how the delicate raspberry gets from fields to fridges without turning to mush, and Andi Oliver heads to an onion factory to see how the eye-watering vegetables are peeled on a gigantic scale.

Helen Lawal heads to one of the world's biggest coffee factories to find out how instant cappuccinos get their froth. Matt Tebbutt is in Naples to discover why most tinned tomatoes come from Italy, while Kate Quilton embarks on a panettone odyssey across Europe to learn how the fluffy cake lasts so long.

The team hits the road to sample some of the UK's finest dishes. Andi Oliver samples some Pimm's, and Jimmy Doherty examines the growing popularity of Caribbean jerk seasoning, and the qualities of different cooking apples. Kate Quilton meets a porridge-making champion, and Matt Tebbutt heads to the island of Orkney to discover the perfect vinegar for fish and chips.