Turning white wine into red


Does the colour of food affect how we taste it? Stefan Gates and food scientist Alice Pegg add red food colouring to a white wine - a pinot gris, to be exact - to see if a group of wine tasters spot their ruse.

E Numbers: An Edible Adventure will be broadcast on Thursday 26 August at 2000 BST on BBC Two and will be available on the BBC iPlayer

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