Food during the Middle Ages was deadly. You could die from drinking a glass of water. Bread was often stretched with sand or cobwebs. The cabbages were so tough you had to boil them all day to make soup. The church did not allow people to eat meat on Fridays, only fish. This is still true for Catholics. Unfortunately, in the Middle Ages, people cheated. They ate large birds called bustards. They also ate beavers, because they could be a sort of fish. (Actually not.) Sugar in the Middle Ages was only for the rich, who ate so much their teeth fell out. (In truth, sugar does not rot your teeth. It's bacteria on the sugar.) Rose flavoring was popular.
The church was not strict when it came alcohol, however. They ran taverns themselves, and used the money to pay for church repairs. Of course, it wasn't really all that nice. Ale was so thick it was like soup. (One king had his brother drowned in a barrel of wine. Ug.) Ale was actually safer than water, so a lot of people drank it.
Well that's all for now. Just be glad you don't live in the Middle Ages!(Or that your mother doesn't stretch her flour with cobwebs.)