The Scottish pork taboo was Donald Alexander Mackenzie's phrase for discussing an aversion to pork amongst Scots, particularly Highlanders, which he believed to stem from an ancient taboo. Several writers who confirm that there was a prejudice against pork, or a superstitious attitude to pigs, do not see it in terms of a taboo related to an ancient cult. Any prejudice is generally agreed to have been fading by 1800. Some writers attribute a scarcity or dislike of pork in certain periods to a shortage of pig fodder.
Donald Mackenzie gave a lecture on the Scottish pork taboo in 1920 when he explained his idea that prejudices against pork-eating could be traced back to a centuries-old religious cult. When he published these theories in the 1930s, he suggested the taboo was imported to Scotland in pre-Roman times by Celtic mercenaries, influenced by the cult of Attis in Anatolia. (The cult of Attis did not abstain permanently from pork; it was a purification for their ceremonies.)
He dismissed any possibility that the pork taboo originated from a literal reading of the Bible, and disputed this with various arguments, noting that early Christian missionaries did not snub pork. He conceded that there was archaeological evidence of pigs being eaten in prehistoric Scotland, but suggested this might have come from pork-eating peoples living near others who did observe the taboo, or be related to ceremonial use of pigs. Later pork production was for export, not for local use, just as eels were caught to send to the English market, while they were unacceptable as food in Scotland. The taboo died out in the Lowlands earlier than in the Highlands, and by the 1800s most crofts in the Highlands and Islands would have kept a grice.
In addition to proposing ideas developed from studying the mythology and folk-lore of Scotland and other cultures, Mackenzie quoted writers of the 18th and 19th centuries.
Pork or swine’s flesh, in any shape, was, till of late years, much abominated by the Scotch, nor is it yet a favourite food amongst them. King Jamie carried this prejudice to England, and is known to have abhorred pork almost as much as he did tobacco.
You should, by this line,
Love a horse and a hound, but no part of a swine.
It is not very easy to fix the principles upon which mankind have agreed to eat some animals, and reject others; and as the principle is not evident, it is not uniform. […] The vulgar inhabitants of Sky, I know not whether of the other islands, have not only eels, but pork and bacon in abhorrence, and accordingly I never saw a hog in the Hebrides, except one at Dunvegan.
Mackenzie suggested that a verse in the English satirical song The Brewer from A Collection of Loyal Songs referred to the taboo:
The Jewish Scots that scorn to eat
The flesh of swine and Brewer's beat
'Twas the sight of this hogshead made 'em retreat
Which nobody can deny!
He believed that this, and other comments associating Scots with Jews, confirm the existence of the taboo, but have nothing to do with its origin. However, Celtic Christians had long faced accusations of 'judaizing'.
He described a superstition about touching or saying "cauld airn" (cold iron) when pigs are mentioned. This was discussed by Dean Ramsay, and is also included in Walter McGregor's Notes on the folk-lore of the north-east of Scotland (Folklore Society 1881).
Among the many superstitious notions and customs prevalent among the lower orders of the fishing towns on the east coast of Fife, till very recently, that class entertained a great horror of swine . . . .
Mackenzie disagreed with Edward Burt, whose Letters from a Gentleman in the North of Scotland (1754) discusses an “aversion” to pork in the Highlands, but says it is not “superstitious”.
At least four ministers writing about their parishes for the Statistical Accounts of Scotland in the 1790s speak of a prejudice which is starting to fade: for instance, "The deep rooted prejudice against swine's flesh is now removed: most of the farmers rear some of that species, which not 30 years ago, they held in the utmost detestation." (Ardchattan, County of Argyle) Account of 1791-99, volume 6, page 177)
An archaeological survey of pork consumption in Scotland by the Society of Antiquities in Scotland in 2000 states: "Whether there is any archaeological evidence of this prejudice against pigs, for whatever reason, is open to question." and that "During the medieval period, it has been noted that rural sites contained more pig bones than urban sites, and that the lowest relative frequencies come from the most southerly of the burghs considered, Peebles and Perth. This contradicts the notion that it was the ‘Highlanders’ who abhorred pork, unless it is assumed that, despite this dislike, they continued to produce it for sale to others."
The historian William Mackay Mackenzie published his thoughts in the Scotsman letters pages (8 October 1921) as part of a long-running debate arising from D. A. Mackenzie's lecture in 1920. While agreeing there had been a "sporadic prejudice" against pork in parts of Scotland, and offering illustrations of this, he was against the idea of a link to a "religious cult". He saw economic factors at work between 1500 and 1800 which would discourage pig-keeping. He cited several examples of pork consumption in the Middle Ages, and described a "temporary lapse" when "the great forests disappeared from Scotland".
In 1983 the American anthropologist Eric B. Ross put forward arguments based on a detailed study of Scottish agricultural history, and asserted the value of cultural materialism rooted in evolutionary anthropology for studying dietary customs, thus avoiding explanations based on "relatively esoteric" beliefs. Because of deforestation there was a loss of beech mast and acorns for feeding pigs, and it was not until the late 18th century that potatoes were produced in sufficient quantity to offer a useful alternative. Throughout this gap in pork consumption by the general population, many of the Scottish upper classes continued to eat the meat. He summed up:
In the years of the eighteenth century and probably earlier, swine were rarely raised in Scotland, particularly in the Scottish Highlands, and subsequent writers have gone so far as to postulate the operation of a taboo on the eating of pork. Unfortunately there is almost nothing known today about local sentiments of that era, and we have only the intellectual rationalizations of educated writers who all too easily found an explanation for the scarcity of pigs in the assumption that a 'foolish prejudice' was at work.