Red Lentil Soup with Lemon

Ingredients

• 3 tablespoons olive oil, more for drizzling
• 1 large onion, chopped
• 2 garlic cloves, minced
• 1 tablespoon tomato paste
• 1 teaspoon ground cumin
• ¼ teaspoon kosher salt, more to taste
• ¼ teaspoon ground black pepper
• Pinch of ground chile powder or cayenne, more to taste
• 1 quart chicken or vegetable broth
• 2 cups water
• 1 cup red lentils
• 1 large carrot, peeled and roughly chopped
• Juice of 1/2 lemon, more to taste
• 3 tablespoons chopped fresh cilantro