Roast the barley in a pan until golden brown and aromatic. This takes about 5 to 6 minutes in medium heat.
Add the water and let it come to a boil.
Once the water comes to a boil, simmer and cover the pan. Let the barley cook until all the water has evaporated and the barley is soft. This will take about 25 to 30 minutes.
If you feel that the barley is still not cooked and the water has all evaporated, add a little bit more water and cook further.
Let the barley cool down to room temperature.