Bannock cakes
Foucault's PendulumBannock cakes are oat-and-flour cakes associated with the Scottish Highlands and the May Day fires of Beltane. In Casaubon’s investigation of the supposed Templar Plan, they become more than a detail of customary food: their name supplies a verbal link through which he tries to connect the Templars, Scotland, and Bannockburn. The cakes matter because the chain of inference is both ingenious and revealing: the Plan makes a piece of bread seem to corroborate a hidden history, while exposing how readily analogy can turn coincidence into proof.
The Scottish custom
Casaubon asks Lia to consult James Frazer’s The Golden Bough about the food eaten in Scotland. Lia first distinguishes the observance of Saint John’s Fire from Beltane: bread is not eaten for Saint John, she finds, but on the night of the first of May, when Beltane fires are lit, people in the Scottish Highlands eat bread. The cakes are made by kneading flour and oats and toasting the mixture on embers. Lia adds that a rite following the meal recalls ancient human sacrifices. Her answer gives Casaubon a specific custom, season, place, and preparation method—details that will become raw material for his argument.
From food to Bannockburn
Casaubon recognizes the discovery as useful to his thesis. According to the legend he is pursuing, the Templars took refuge in Scotland with King Robert the Bruce and helped him win the Battle of Bannockburn; in return, the king established them as the new Order of the Knights of Saint Andrew of Scotland. The account does not present the cakes as direct historical evidence of that refuge. Their importance comes from the name Bannockburn, which Casaubon subjects to a sequence of translations and associations.
He checks a large English dictionary and follows the word through its recorded forms: bannock in Middle English, bannuc in Anglo-Saxon, and bannach in Gaelic. The word denotes a cake cooked on a grill or slab, made from barley, oats, or another grain; burn means a stream. If French Templars had rendered Bannockburn into French while sending news from Scotland to their compatriots in Provins, Casaubon reasons, the name might have meant something like the stream of the cake, loaf, or bread. Those who ate bread, he then concludes, were the victors at the stream of bread, and so the name might point toward the Scottish group and its spread through the British Isles. The interpretation turns a place-name into a coded message, with Bannock cakes supplying its apparent key.
The Plan’s logic and its limits
The argument lets Casaubon imagine a route from Portugal to England, shorter than Colonel Ardenti’s proposed route from the Pole to Palestine. Its force depends not on a document establishing that the cakes or their name had Templar significance, but on successive verbal correspondences: the bread custom, the etymology of bannock, the meaning of burn, and the story of the king and the Templars. Each connection makes the next seem more plausible within the framework Casaubon has adopted.
The scene therefore gives Bannock cakes a double function. They are a concrete food, tied to a named festival and a particular preparation, but they also become an instrument of interpretation. Casaubon’s dictionary work gives the deduction the texture of research; its leap from linguistic possibility to hidden historical confirmation demonstrates the Plan’s method at work. A small, ordinary cake can be made to bear the weight of an international secret tradition—not because the evidence proves that tradition, but because the Plan teaches its interpreters to read every detail as a possible link.