One example of DNA testing is checking that a burger comes from Aberdeen Angus beef.

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But many ranches are now cross-breeding the zebu with Aberdeen Angus and other European stock.

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That goes both for the humans who frequent the trendy boutiques and spas and for the prize Aberdeen Angus cows that arrive at the agricultural show held there every July.

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In the UK, three Aldi burger products - frozen Oakhurst 100% beef quarterpounders, frozen specially-selected Aberdeen Angus quarterpounders and frozen Oakhurst beefburgers (16 pack) - were withdrawn when the horsemeat discovery was made public.

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Texan boots and cowboy hats are a frequent sight at the local airport, but few take the Texan theme as far as Sir Moir: he lives on a ranch in the rolling countryside near the queen's Scottish seat of Balmoral, breeding Aberdeen Angus cattle.

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Most of these - more than 50 - are in Aberdeenshire, with smaller numbers in Aberdeen, Angus, Perth and Kinross, Fife and the Borders.

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