01 - Set the oven to 375°F (190°C) to prepare for roasting.
02 - Thoroughly rinse the barley under cold running water and drain well.
03 - Spread the rinsed barley evenly on a clean kitchen towel and pat dry to eliminate excess moisture.
04 - Line a baking sheet with parchment paper and spread the barley in a single, even layer.
05 - Place the baking sheet in the preheated oven and roast for 15 to 20 minutes, stirring halfway through until the barley turns golden brown and releases a nutty aroma.
06 - Remove the roasted barley from the oven, allow it to cool completely, then transfer to an airtight container for storage.