Cooks bought bread and pies from a breadmaker. Some cooks prepared bread dough at home, and brought it to the baker for him to bake.
They made sure to weigh the bread before and after they brought it to the bakery. Some bakers pinched a bit off of each loaf that was brought to them, and by enough pinching they made extra loaves to sell.
A cheating baker was paraded through the streets with a loaf around his neck.