1. MSG, Brazil Nuts, Elderflower

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. 31 August 2015. 25 min

Are alarming headlines about MSG justified? Jimmy visits a huge factory to find out. Kate investigates rumours that the Brazil nuts in UK supermarkets are all radioactive. Plus: elderflower cordial.

2. Vitamin D, Wagu Beef, Swiss Cheese

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. 7 September 2015. 25 min

Jimmy investigates the effects of vitamin D deficiency. Kate wants to know how supermarkets can sell wagyu beef, cheaply. And Matt heads to Switzerland to ask why there are holes in Swiss cheese.

3. Blue Fin Tuna, Ice Cream, Peas

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. 14 September 2015. 25 min

Jimmy heads to Spain to meet an entrepreneur farming blue fin tuna. Kate investigates why ice cream can go gritty, and Matt explores the difference between premium and budget peas.

4. Vodka, Instant Coffee, Wensleydale Cheese

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. 21 September 2015. 25 min

Jimmy investigates whether it's worth splashing out on expensive vodka, Kate finds out how coffee beans are turned into instant granules, and Matt checks out Wensleydale cheese.

5. Pistachios, Rolled Oats, Prosecco

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. 28 September 2015. 25 min

Why do we have to pay for pistachios that we can't crack open and eat? Are traditional rolled oats better for us than quick-cook porridge? Plus: the trouble with draught Prosecco.

6. Vegetables, Wine, Biscuits

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. 5 October 2015. 25 min

Jimmy examines how far farmers go to produce perfect veg for supermarkets. In America, Kate discovers that wine's getting stronger. Matt finds out which biscuit's best for dunking.

7. Pineapples, Chocolate, Mussels

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. 12 October 2015. 25 min

Kate discovers how scientists are using pineapple enzymes to help burns victims. How do the bubbles get into chocolate bars? And should we never eat mussels when there's an 'r' in the month?

8. Plums, Vegetables, Cherry Tomatoes

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. 19 October 2015. 25 min

Do prunes really keep us regular? How much sugar is in cherry tomatoes, and are supermarkets labelling them correctly? And can a Dutch pioneer grow veg using sea water?

9. Crabs, Greens, Gummy Sweets

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. 26 October 2015. 25 min

Jimmy explores new ways to get crabs to come out of their shell. Kate finds out how to get children to eat their greens. And how are gummy sweets made? Matt investigates.

10. Revisited: Mozzarella, Venison and Sprouts

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. 2 November 2015. 25 min

The team look back at some favourite investigations. Why is that liquid in packets of mozzarella? Why do we import venison when there are so many British deer? Why shouldn't we eat raw bean sprouts?