Food Unwrapped

Fizzy Sweets, Vitamin D, Mushrooms, Raw Kale (15x8)

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Jimmy Doherty investigates what makes fizzy sweets effervesce and swots up on his chemistry to see if he can harness their explosive power in a rocket. In Ireland, Kate Quilton finds out if a range of vitamin-enriched mushrooms could help the one in five Britons who lack vitamin D, while Matt Tebbutt explores claims that raw kale may be bad for people's health.