Why did the Peasants eat mostly Barley?

Peasants primarily ate barley because it was a hardy, drought-resistant grain that could thrive in poor soil conditions, making it easier to grow than other crops. Barley was also versatile, used for making bread, porridge, and beer, providing essential nutrition in a diet often lacking in variety. Additionally, it was more affordable and accessible than other grains like wheat, making it a staple food for the lower classes.