Draji grain
From The unofficial Dark Sun wiki
The original boxed set mentions Draj being a major producer of grain, without mentioning which specific grain crops are grown in its fertile mudflats.
Draji grain is used as a staple food in much of the Tyr region. Even though Draj is a warmongering city-state, trade is still good, because other city-states desperately need their crops to feed their starving populations.
[edit] Amaranth grain
In the spirit of the Mesoamerican flavour of Draj, it is possible that Draji grain is in fact amaranth.Amaranth is a rice or corn-like grain. It has a good taste and is easy to cook. The seeds are eaten as a cereal grain. They can be ground into flour, popped like popcorn or cooked into a porridge. The leaves can be cooked like spinach, and the seeds can be germinated into nutritious sprouts.
Some types of amaranth can also be used as a source of purple-red dye.
