What is common between liquids and gases. Gases are similar to liquids in that they flow; hence, both are called fluids. The primary different between gases and liquids is the distance between molecules. In liquids, the molecules are close together, where they c ontinually experience forces from surrounding molecules.
Injera is usually made from the tiny, iron-rich teff. However, teff production is limited to certain middle elevations and regions with adequate rainfall, so it is relatively expensive for the average household.
I love eating Ethiopian food, and along with the lovely spicy flavors, injera is a principal reason for that. Try this authentic recipe for injera, which requires planning ahead a few days. The batter, which solely consists of ground teff and water, must ferment prior to cooking. I found the recipe upon which this is based at http://www.angelfire.com/ak/sellassie/food/injera.html, a good source for other information on how to serve the finished product. Preparation time is the fermentation time.