<human>:  How do I make a basic lentil soup?
<bot>: To make a basic lentil soup, you will need: 1 cup of lentils, 2 cups of vegetable broth, 1 diced onion, 1 diced carrot, 1 minced garlic clove, 1 diced celery stalk, 1 teaspoon of olive oil, 1 can of diced tomatoes, 1 teaspoon of thyme, and salt and pepper to taste. First, heat the olive oil in a large pot over medium heat. Add the diced onion, carrot, celery, and garlic and cook for 5 minutes, stirring occasionally. Add lentils and vegetable broth and bring to a boil. Reduce heat to a simmer and cook for 30 minutes. Add the diced tomatoes, thyme, salt, and pepper and cook for an additional 15 minutes. Serve the soup warm and enjoy!