Bo ri cha (Toasted barley tea)

In a kettle, add cold water and barley.
Bring to a boil, reduce to medium, boil for 10 minutes.
Let cool. Put it in a refrigerator. Serve cold.

 cool tip !
Bo ri cha is a common tea in Korea. When you go to a restaurant, usually they serve you bo ri cha. In hot summer, it is like a cool breeze.

You can purchase toasted barley in a Korean or Asian grocery. Also it comes in a tea bag. A big tea bag is for 2-litter cattle. Or you can toast your own barley at home.
Put barley in a large pot on a medium heat, stir constantly,toast until golden.