OPEN TO PUBLIC
The Hidden Science Inside the Ethiopian Jebena
Before modern brewing tools, there was clay and fire.
In this issue of A Coffee Solution, Amanuel Ayalew explores the thermal physics, material science, and extraction logic behind Ethiopia’s iconic Jebena. From volcanic clay and low-fire earthenware to convection geometry and evaporation dynamics, this feature reveals why the Jebena works — and how it can be understood through measurable science.
The world standardized espresso and pour-over.
It is time to understand Jebena.