Low-standard porridge.
no
Bread & cheese with ale.
In the medieval era there was something called a debtors prison. This was a prison where people would usually go if failing or refusing to pay off their debts
yes they eat it because they are idiots
enemys like humans
in medieval times people of less importance sat below the salt
he sent people to jail because they were bad guys and they loved to steal and eat people's eel pie
Yes, you get to eat and shower in jail.
See the related question for information
eat
yes one of the main jobs was farming
Bread, cheese, meat, vegetables and fruit.