Rinse the roasted barley under cold water to remove any dust or impurities.

If desired, lightly toast the rinsed barley in a dry skillet over medium heat until fragrant.

Bring 8 cups of water to a rolling boil in a medium saucepan.

Add the rinsed (or toasted) barley to the boiling water.

Lower the heat and let it simmer for about 20 minutes.

After simmering, remove the pot from heat and strain the tea into a pitcher using a fine mesh strainer.

You can serve the tea hot immediately or let it cool to room temperature.

If you have leftovers, store them in a container in the fridge.