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Spanish researchers have managed to distinguish between different varieties of beer using an electronic tongue. The discovery, published in the journal 'Food Chemistry', is accurate in almost 82 percent of cases. Credit: Manel del Valle

See: Engineering Update #44: Robots learn to taste beer

According to the EurekAlert! piece, "varieties of beers that the tongue is not trained to recognise, such as beer/soft drink mixes or foreign makes, were not identified (discrepant samples), which, according to the experts, validates the system as it does not recognise brands for which it was not trained."

An illustration of an artificial neural network.

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