Rinse pearl barley under running water.
Now pour water in a sauce pan. Add barley to it and allow it to boil over a medium flame.
Then simmer (covered) for 10 or 15 minutes or until the grains are cooked and softened. Turn off the flame.
Else you can pressure cook for 3 whistles on high flame and then simmer , cook for the next 5 minures on a low flame.
Allow it to cool.
Strain it through a fine mesh strainer so that the grains get separated. Add sugar to the strained liquid. Mix well.
The barley water is ready to be served.You can also serve it cold.