North African Red Lentil Soup

Name: North African Red Lentil Soup
Ingredients: 1 tablespoon minced garlic (about 3 good-sized cloves); 1 large carrot , diced; 8 cups water; Freshly ground black pepper; 2 cups red lentils; 1 ½ teaspoons salt; 2 teaspoons ground cumin; 2 tablespoons olive oil; Lime wedges, for garnish; 1 medium red or yellow onion , chopped