How to Make It
Combine barley and water in a saucepan; bring to a boil. Cover, reduce heat, and cook 50 minutes. Drain. Heat a skillet over medium heat. Add 2 teaspoons olive oil. Add onion and rosemary; cook 5 minutes, stirring frequently until onion is lightly browned. Combine barley, onion mixture, 2 teaspoons olive oil, lemon rind, and salt.