Vegetables and barley soup - Le Coup de Grâce

Ingredients

• 1 medium yellow onion, finely chopped
• Olive oil
• 3 celeri sticks with leaves, sliced
• 2 big carrots, sliced
• 2 small turnips, diced
• 1/2 teaspoon dried thyme
• 1/2 teaspoon dried rosemary
• 1x796ml can diced tomatoes with italian spices
• 8 cup chicken broth
• 3/4 cup pearl barley
• Salt and ground pepper