An episode celebrating all things sweet, looking back at some favourite sugar-centred investigations. Matt Tebbutt hits the patisseries of Paris to find out why macarons are so expensive and explores the reasons for the surge in salted caramel Jimmy Doherty heads to America to find out how the chunks in ice-cream stay solid, asks why chocolate sometimes goes a funny white colour, and learns the secrets behind fizzy sweets. Kate Quilton reveals why some honey is runny, while other varieties are not.

A special guide to healthy eating for the New Year. Jimmy Doherty takes a trip to Thailand to discover if ginger makes people more resistant to cold and puts the belief that beer should be drunk before wine, not after, to the test. Amanda Byram learns some surprising facts about the fitness benefits of spinach and presents some dietary tips to help with working out, Matt Tebbutt discusses easy ways to get a daily dose of fruit and vegetables, and Andi Oliver learns if chocolate may actually be good for teeth.

From novel turkey cooking methods to affordable fizz, this special show reveals everything you need to know to feed your family and friends better, cheaper and faster

Favourite investigations. Matt Tebbutt visits China, the world's biggest oyster producer. Jimmy Doherty looks at dry gin. Kate Quilton asks if herbal bedtime teas can help you nod off.

Favourite investigations. Jimmy Doherty finds out what gives piquanté peppers their sweetness. And Kate Quilton investigates potentially dangerous levels of mercury in tuna fish.

Jimmy Doherty visits Spain to ask how much orange is in orange squash, Matt Tebbutt runs across a pond of custard, and Kate Quilton lifts the lid on Marmite

Favourite investigations. Jimmy Doherty visits Europe's biggest brewery. Kate Quilton challenges Matt Tebbutt to make crumpets. And Matt discovers why maple syrup is so expensive.

Favourite investigations. Kate Quilton visits McVitie's to ask why many biscuits have little holes all over them. Jimmy Doherty finds out how corks are made for wine bottles.

Kate and Helen explore vanilla, while in the Netherlands Matt explores the myth that Edam balls were once used as emergency cannon balls!

Some favourite investigations as Jimmy Doherty looks at how our national dish could become squid and chips, Kate Quilton reports on kangaroo meat, and Matt Tebbutt looks at pesto

Matt Tebbutt reveals the secret behind the iced writing that is so perfect on every supermarket birthday cake, while Kate Quilton looks at the growing trend of hemp-based food products. Jimmy Doherty heads to Japan to establish why soy is in so many of the public's favourite foods and learns how this little bean could be health enhancing.

Jimmy Doherty asks what offers better value: growing your own fruit and veg or buying from the supermarket? Plus, investigating the illegal trafficking of eels, and ginger beer.