Secrets Of Your Supermarket Food S03 E04 Episode 4

A look at snacks, treats and comfort food, with Sian Williams and the Hill family examining the difference between branded biscuits and their cheaper supermarket counterparts. Stefan Gates investigates how junk food affects the human gut's microbiome, while Nisha Katona heads to Leeds to find out how chocolate is made and discovers some surprising health benefits to the dark variety.