What was the first cereal used by man?

It's difficult to say definitively which cereal was the *first* used by humans, as our ancestors have been consuming grains for thousands of years. However, some of the earliest cultivated grains, which likely formed the basis of early cereal consumption, include:

* Wheat: Cultivated in the Fertile Crescent around 10,000 years ago.

* Barley: Cultivated in the Fertile Crescent around 10,000 years ago.

* Rice: Cultivated in China around 9,000 years ago.

* Millet: Cultivated in China and Africa around 9,000 years ago.

These grains would have been consumed in various forms, possibly ground into flour, cooked into porridge, or used in breads.

It's important to remember that early humans would have also foraged for wild grains and seeds, making it difficult to pinpoint a specific "first" cereal.