It's the staff of life, the body of Christ, the foundation of Western civilization, the thing we work to put on our table; it's our daily bread.
It was so central to our ancestors that it became a sacred object, a political totem, and infused their language - the difference between feast and famine. Yet now it's almost universally taken for granted.
And because bread was there as a witness to every stage of our transformation, from hunter gatherer to 21st century creatures of the cyber age, it has a lot to tell us.
In Our Daily Bread the journalist and broadcaster Jonathan Kent takes bread as a starting point for an exploration of human history, health, faith, culture and relationships.
A Half-Baked History of the World in Seven Loaves (and a crumb) takes eight slices from twenty five thousand years of bread.
Producer: Jonathan Kent
A Falling Tree Production for BBC Radio 4.