Episode 3 of 3
Duration: 1 hour
Alex Riley is on the trail of the global food and drink giants. What's so special about them? How have they penetrated our brains so we recognise them like members of our own families? Alex travels the globe to find where they've come from and how they make us keep on buying them.
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Alex Riley asks if food brands are so powerful that they can actually affect our taste buds. Let us know what you think.
Read Alex Riley's post on the BBC Food blog
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