Food Unwrapped

Sunflower Seeds, Rhubarb, Sugar in Milkshakes (19x7)

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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.