Recipe: Barley Risotto With Feta and Lemon

Name: Recipe: Barley Risotto With Feta and Lemon
Cuisine: European, Italian, Mediterranean
Ingredients: 2 tablespoons extra virgin olive oil; 1 yellow onion, chopped; 2 carrots, chopped; 2 ribs celery, chopped; 1/4 teaspoon kosher salt; 2 cloves garlic, chopped; 1 tablespoon tomato paste; 1 cup pearl barley; 14.5-ounce can diced tomatoes; 4 cups water; 1 teaspoon fresh thyme leaves; 1/4 teaspoon crushed red pepper flakes; 1/4 teaspoon freshly ground black pepper; 3 tablespoons crumbled feta cheese; Grated lemon zest of 1 lemon