Bread, Meat, Vegetables etc. All of these things were not highly desirable or expensive, they were the plain types of foods therefore did not cost much.They could also buy their own wheat to make...
The horse is an herbivor, which means he only eats plant life, grasses mostly. If no grass is available they will need hay and some kind of grain to make sure they get all the nutrition they require....
you are what you eat is the corect way to say it because if you eat something unhealthy then you are unhealthy and if you eat something healthy then you are healthy.