Can you tell me about the process of brewing Tella beer?

Tella beer is a traditional Ethiopian drink made from fermented grains, usually barley. The brewing process involves soaking the grains in water, boiling them, and then fermenting the mixture with yeast. The beer is typically brewed in large batches and left to ferment for several days before being ready to drink. The final product is a slightly sour and cloudy beer with a unique flavor profile.