1  Bring barley and 4 cups water to a boil in medium saucepan. Reduce heat to medium-low and cook 20 minutes, or until barley is al dente. Rinse under cold water, drain, and set aside.2  Heat 2 tsp. oil in large skillet over medium-high heat. Add carrots and cumin, and stir to coat. Cook 10 minutes, stirring occasionally, or until carrots are deep brown but still firm. Add pistachios, and cook 2 to 3 minutes more. Transfer to large bowl, and stir in barley, chickpeas, green onions, mint, lemon juice, and remaining 2 Tbs. olive oil. Season with salt and pepper, if desired. Cover, and refrigerate 2 hours, or overnight.3  Taste and adjust seasonings by adding more lemon juice, olive oil, salt, and pepper before serving. Serve on a bed of baby greens or arugula, dusted with cumin.