Red Lentil Soup With Lemon Recipe

Name: Red Lentil Soup With Lemon Recipe
Ingredients: 3 tablespoons olive oil, more for drizzling; 1 large onion, chopped; 2 garlic cloves, minced; 1 tablespoon tomato paste; 1 teaspoon ground cumin; 1/4 teaspoon kosher salt, more to taste; 1/4 teaspoon ground black pepper; Pinch of ground chili powder or cayenne, more to taste; 1 quart vegetable stock (recipe below); 1 cup split red lentils; 1 large carrot, peeled and diced; Juice of 1/2 lemon, more to taste; 3 tablespoons chopped fresh cilantro; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~; Homemade vegetable stock:; 1 leek. sliced and rinsed clean; 3 medium sweet onions, peeled and chopped; 3 large carrots, scrubbed and chopped; 2 stalks celery, rinsed and chopped; 8 ounces crimini mushrooms, rinsed and quartered; 2 roma tomatoes, rinsed and quartered; 1 head fennel (about 1 lb.), rinsed, and chopped; Handful fresh parsley; Handful fresh thyme; Handful fresh oregano; 1 tablespoon black peppercorns; Kosher salt to taste