The Assize of Bread
Throughout the medieval world there were regulations about how to make and sell bread. Because this food was so central the people’s lives, authorities needed to make sure that even the poor could afford to buy it. The laws set up price controls for bakers, which would allow someone to buy at least some quantity of bread for a penny.
This system would last in England for over 500 years, although bakers occasionally tried to cheat by selling bread that did not meet regulations. In fourteenth-century London, for example, bakers were caught selling bread that had been mixed with dirt or chalk or even had an iron-bar inserted into it to make it weigh more.
See? \/ Not just in china that make fake seaweed from black plastic bag. lol