Largest blind taste test

According to Official Guinness Records,

The largest blind taste test consisted of 1,471 people and was achieved by Oreo and Nabisco (Spain) at the Palacio de Deportes de la Comunidad de Madrid, Spain, on 20 June 2009.
All participants compared an Oreo buscuit against another brand using the 'Oreo ritual' of twisting it open, licking the cream and dunking the biscuit in milk.

For a complete list of 2009 records, please visit 2009 Guinness Records in Spain.

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