>>4132163You are likely thinking of a famous piece of 12th-century political propaganda written by a Welsh-Norman clergyman named Gerald of Wales.
In his 1188 book Topographia Hibernica (Topography of Ireland), Gerald claimed that during a coronation ceremony in Ulster, a prospective Irish king would engage in a public ritual involving a white mare. According to his account, the king would have mock or literal intercourse with the horse, after which the horse was slaughtered, chopped up, and boiled into a broth. The king would then allegedly bathe in the horse soup while eating the meat and lapping up the broth directly with his mouth.
The Reality Behind the Myth
Modern historians widely agree that Gerald's specific, graphic account was sensationalized wartime propaganda designed to paint the Irish as "barbarous" and "beastly". This served as a convenient justification for the Norman invasion of Ireland and subsequent land grabs.
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