The Koury family are rightly proud of their German-style beer, which is made without any additives or preservatives.

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Instead, it talks of "reconciling pleasure and a balanced diet", and how it contains no artificial colourings, preservatives or hydrogenated fats.

ECONOMIST: European politics

"To be sold at supermarkets or outside Rio we would have to add preservatives", something the founders are against, says Mr Ponce.

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