Brits have no idea where many common foods - such as feta or black pudding - come from or whether they are sustainably sourced.
A third of the 2,000 adults polled had no idea feta cheese is made from sheep's milk and half did not know the main ingredient for black pudding was pig's blood.
Two thirds were unaware the humble peanut is grown underground, while 66 per cent didn't know the cashew nut, is the seed of a fruit.
More than six in 10 also had no idea maple syrup comes from the tree itself - with nearly a quarter thinking it's made from tree bark.
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