Rinse the barley – Place the dry barley in a fine-mesh strainer and rinse thoroughly under cold running water for 30 seconds. Drain well.
(Optional soak for hulled barley) – If using hulled barley and you have time, cover it with cold water in a bowl and soak overnight (8 hours). Drain and proceed. This cuts cooking time by about 15–20 minutes.
Toast for flavor (optional) – In your saucepan, melt butter or heat oil over medium heat. Add the rinsed barley and toast, stirring constantly, for 2–3 minutes until fragrant and lightly golden.
Add liquid and salt – Pour in the water or broth (2.5 cups for pearl, 3 cups for hulled). Add the salt and stir once.
Bring to a boil – Turn the heat to high and bring the liquid to a rolling boil.
Simmer covered – Reduce the heat to the lowest setting, cover the saucepan with the lid, and let it gently simmer:Pearl barley: 25–30 minutesHulled barley (soaked): 30–35 minutesHulled barley (unsoaked): 45–60 minutesDo not lift the lid during cooking. Check for doneness – After the minimum time, remove from heat (keep covered) and let it rest for 5–10 minutes. The liquid should be absorbed and the grains tender but chewy. If they are still too firm and liquid remains, simmer for another 5 minutes covered.
Fluff and rest – Uncover, fluff gently with a fork, and let sit uncovered for 2–3 minutes to release excess steam.
Serve – Use as a side dish, toss into salads, add to soups, or sweeten with milk and honey for breakfast.