The Egyptians relied heavily on the annual flooding of the Nile River for their survival. The floods provided rich soil for growing crops like grain, vegetables, and fruit. Bread made from grain was a staple food, though it was gritty due to sand mixed in during grinding. Meat was expensive so most people drank beer made from barley instead of wine. Houses were constructed from mud bricks that quickly deteriorated. Hunting was mainly for nobility while fishing and bird catching provided additional food sources for common people. Farming and trade centered around the bounty supplied by the life-giving Nile floods each year.