Bread regulation was the most significant and long-lasting commercial law in medieval England. The first bread assize law dates back to the 13th century, but its origins are even older. This law can be traced back to proclamations from the reigns of Henry II and John that regulated the purchasing requirements of the royal household.5
These assizes adjusted the weight of bread according to the price of wheat. The price of bread was always the same, even though the price of grain fluctuated. Instead, when the price of grain increased, the weight of bread was reduced accordingly. For every increase in the price of wheat, the weight of a loaf fell.6 The Assize of Bread and Ale set the price of ale and the weight for a farthing loaf of bread.7 The act reduced competition and was purportedly given at the request of the bakers of Coventry, embracing several ordinances of Henry III's predecessors.8
The expensive equipment associated with brewing and baking, particularly the oven, created a commercial market for the goods. This resulted in a perceived need for regulations controlling quality and pricing, and checking weights, to avoid fraudulent activity by food providers.9
Some versions of the statute include an explanatory third paragraph which begins:
The assize presented an established scale, then of ancient standing, between the prices of wheat and of bread, providing that when the quarter (~240 L / 6.9 US bushel if the gallon is taken to be the wine gallon) of wheat was sold at twelve pence, the farthing loaf of the best white bread should weigh six pounds sixteen shillings (~2.5 kg / 5.6 lb avdp if the pound is taken to be the troy pound). It then graduated the weight of bread according to the price of wheat, and for every six pence added to the quarter of wheat, the weight of the farthing loaf was reduced; until, when the wheat was at twenty shillings a quarter, it directed the weight of the loaf to be six shillings and three pence (~120 g / 4.1 oz avdp)..
The assize of bread was in force until the beginning of the 19th century, and was only then abolished in London.12
In a similar manner, the assize regulated the price of the gallon of ale, by the price of wheat, barley, and oats, stating that,
Over time, this uniform scale of price created opportunities for arbitrage that made it extremely inconvenient and oppressive; and by the Brewers and Coopers Act 1531 (23 Hen. 8. c. 4) in the 16th century, it was enacted that ale-brewers should charge for their ale such prices as might appear convenient and sufficient in the discretion of the justices of the peace within whose jurisdiction where the ale-brewers lived. The price of ale was regulated by provisions like those stated above, and the quality was ascertained by officers of great antiquity, called gustatores cervisiae, that is, "aletasters" or ale-conners, chosen annually in the court-leet of each manor, and were sworn "to examine and assay the beer and ale, and to take care that they were good and wholesome, and sold at proper prices according to the assize; and also to present all defaults of brewers to the next court-leet."14
The assize likely led to the term 'baker's dozen', as bakers would include an extra loaf to ensure that they did not violate the law.15
Gibbins 1897, pp. 245–246. - Gibbins, Henry de Beltgens (1897). The Industrial History of England. London: Methuen & Co. https://archive.org/details/industrialhistor00gibb ↩
Cartwright 2001, p. 152. - Cartwright, Peter (2001). Consumer Protection and the Criminal Law. Cambridge: Cambridge University Press. p. 152. ISBN 0-521-59080-9. https://books.google.com/books?id=GaQRrzxsh8MC ↩
Bennett 2004, pp. 233–236. - Bennett, Judith M. (2004). Women in the Medieval English Countryside. New York: Oxford University Press. ISBN 978-0195045611. https://books.google.com/books?id=BlPozsV5t_EC ↩
Hornsey 2004, pp. 292–296. - Hornsey, Ian (2004). A History of Beer and Brewing. London: Royal Society of Chemistry. ISBN 0-85404-630-5. https://books.google.com/books?isbn=0854046305 ↩
Davis 2004, p. 464. - Davis, James (2004). "Baking for the common good: a reassessment of the assize of bread in Medieval England". The Economic History Review. 57 (3): 464–502. doi:10.1111/j.1468-0289.2004.00285.x. JSTOR 3698543. S2CID 154643188. https://doi.org/10.1111%2Fj.1468-0289.2004.00285.x ↩
Wood 2002, pp. 97–98. - Wood, Diana (2002). Medieval Economic Thought. Cambridge: Cambridge University Press. ISBN 0-521-45893-5. https://books.google.com/books?isbn=0521458935 ↩
Davies, Charles (1871) The Metric System, Considered with Reference to its Introduction into the United States. A. S. Barnes and Company ↩
Fraser, Evan D. G.; Rimas, Andrew (2011). Empires of food: feast, famine and the rise and fall of civilizations. London: Arrow Books. p. 200. ISBN 978-0099534723. Retrieved 28 May 2024. 978-0099534723 ↩
Ruffhead, Owen, ed. (1763), The Statutes at Large, vol. I: From Magna Charta to the End of the Reign of King Henry the Sixth. To which is prefixed, A Table of the Titles of all the Publick and Private Statutes during that Time, London: Mark Basket for the Crown, pp. 22. (in English) & (in Latin) /wiki/Owen_Ruffhead ↩
Gibbins 1897, p. 229. - Gibbins, Henry de Beltgens (1897). The Industrial History of England. London: Methuen & Co. https://archive.org/details/industrialhistor00gibb ↩
Long, George, ed. (1833) "Ale", in: The Penny Cyclopædia. 30 vols. London: Society for the Diffusion of Useful Knowledge; {which vol.?} p. 285. ↩
"Why Are There 13 In A Baker's Dozen?". Southern Living. Retrieved 13 February 2025. https://www.southernliving.com/food/kitchen-assistant/why-is-bakers-dozen-13 ↩